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Author |
Chen, P. S. |
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Title |
Infrared properties of barium stars |
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Journal Article |
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Year |
2001 |
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Astron. Astrophys. |
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A&A |
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Volume |
372 |
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1 |
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245-248 |
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0004-6361 |
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415 |
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Hsiao, F.Z.; Lin, M.C.; Wang, C.; Lee, D.S.; Chen, J.R.; Hilbert, B.; Praud, A. |
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The liquid helium cryogenic system for the superconducting cavity in SRRC |
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Conference Article |
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Year |
2001 |
Publication |
Proc. Particle Accelerator Conference |
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2 |
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1604-1606 |
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A 500 MHz superconducting cavity will replace the current copper cavity and begin to operate in the beginning of the year 2003. A liquid helium cryogenic system provides the cavity at 4.5 K a cooling capacity of 255 W without LN2 pre-cooling and a liquefaction rate of 110 liter/hour with LN2 pre-cooling. A safety factor of 1.5 is used to estimate the heat load from the superconducting cavity and the heat loss from the transfer lines. With the LN2 pre-cooling, this cooling system provides a cooling capacity of up to 450 W to cool down the additional superconducting Landau cavity. The capacity of the system can be tuned using a frequency driver installed at the compressor station. The pressure fluctuations of the dewar and of the suction line are kept to the same stability requirement that of the cavity cryostat to minimize the influence in cavity operation. A shutdown period for maintenance of more than 8000 hours for the cryogenic system is expected without interfering with the continuous operation of the superconducting cavity. |
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RPLAB @ s @ |
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426 |
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Ganzevles, W. F. M.; Gao, J. R.; de Korte, P. A. J.; Klapwijk, T. M. |
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Title |
Direct response of microstrip line coupled Nb THz hot-electron bolometer mixers |
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Journal Article |
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Year |
2001 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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Volume |
79 |
Issue |
15 |
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2483-2485 |
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0003-6951 |
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311 |
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Van Rudd, J.; Johnson, Jon L.; Mittleman, Daniel M. |
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Cross-polarized angular emission patterns from lens-coupled terahertz antennas |
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Journal Article |
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Year |
2001 |
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J. Opt. Soc. Am. B |
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Volume |
18 |
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10 |
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1524 |
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0740-3224 |
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475 |
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Kroug, M.; Cherednichenko, S.; Merkel, H.; Kollberg, E.; Voronov, B.; Gol'tsman, G.; Hübers, H. W.; Richter, H. |
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Title |
NbN hot electron bolometric mixers for terahertz receivers |
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Journal Article |
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Year |
2001 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
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Volume |
11 |
Issue |
1 |
Pages |
962-965 |
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NbN HEB mixers |
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Sensitivity and gain bandwidth measurements of phonon-cooled NbN superconducting hot-electron bolometer mixers are presented. The best receiver noise temperatures are: 700 K at 1.6 THz and 1100 K at 2.5 THz. Parylene as an antireflection coating on silicon has been investigated and used in the optics of the receiver. The dependence of the mixer gain bandwidth (GBW) on the bias voltage has been measured. Starting from low bias voltages, close to operating conditions yielding the lowest noise temperature, the GBW increases towards higher bias voltages, up to three times the initial value. The highest measured GBW is 9 GHz within the same bias range the noise temperature increases by a factor of two. |
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312 |
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Shitov, S. V.; Levitchev, M.; Veretennikov, A. V.; Koshelets, V. P.; Prokopenko, G. V.; Filippenko, L. V.; Ermakov, A. B.; Shtanyuk, A. M.; Kohlstedt, H.; Ustinov, A. V. |
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Title |
Superconducting integrated receiver as 400-600 GHz tester for coolable devices |
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Journal Article |
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Year |
2001 |
Publication |
IEEE Trans. Appl. Supercond. |
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Volume |
11 |
Issue |
1 |
Pages |
832-835 |
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RPLAB @ s @ sis_Shitov_2001 |
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313 |
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Author |
Gershenson, M. E.; Gong, D.; Sato, T.; Karasik, B. S.; Sergeev, A. V. |
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Title |
Millisecond electron-phonon relaxation in ultrathin disordered metal films at millikelvin temperatures |
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Journal Article |
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Year |
2001 |
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Appl. Phys. Lett. |
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Volume |
79 |
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Pages |
2049-2051 |
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HEB detector, FIR, far infrared |
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RPLAB @ s @ heb_eph_interaction_Gershenzon |
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315 |
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Author |
Jackson, B. D.; Baryshev, A. M.; de Lange, G.; Gao, J. R.; Shitov, S. V.; Iosad, N. N.; Klapwijk, T. M. |
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Title |
Low-noise 1 THz superconductor-insulator-superconductor mixer incorporating a NbTiN/SiO2/Al tuning circuit |
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Journal Article |
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Year |
2001 |
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Appl. Phys. Lett. |
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Volume |
79 |
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3 |
Pages |
436 |
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RPLAB @ s @ sis_Jackson_2001 |
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314 |
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Author |
Siemsen, K. J.; Bernard, J. E.; Madej, A. A.; Marmet, L. |
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Title |
Absolute frequency measurement of a CO2/OsO4 stabilized laser at 28.8 THz |
Type |
Journal Article |
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Year |
2001 |
Publication |
Applied Physics B: Lasers and Optics |
Abbreviated Journal |
Appl. Phys. B: Lasers and Optics |
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Volume |
72 |
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Pages |
567-573 |
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HgCdTe detector |
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462 |
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Eliasson, Blake J. |
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Metal-insulator-metal diodes for solar energy conversion |
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Book Whole |
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2001 |
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University of Colorado |
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MIM diodes |
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Ph.D. thesis |
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PhD thesis |
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474 |
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Shelkovnikov, A.; Grain, C.; Nguyen, C. T.; Butcher, R. J.; Amy-Klein, A.; Chardonnet, C. |
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500-Hz two-photon Ramsey fringes with a SF6 beam: towards a new frequency standard in the 30-THz spectral region |
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Journal Article |
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Year |
2001 |
Publication |
Applied Physics B: Lasers and Optics |
Abbreviated Journal |
Appl. Phys. B: Lasers and Optics |
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Volume |
73 |
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Pages |
93-98 |
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THz applications |
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485 |
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Zwiller, Vale<cc><81>ry; Blom, Hans; Jonsson, Per; Panev, Nikolay; Jeppesen, Sören; Tsegaye, Tedros; Goobar, Edgard; Pistol, Mats-Erik; Samuelson, Lars; Björk, Gunnar |
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Single quantum dots emit single photons at a time: Antibunching experiments |
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Journal Article |
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Year |
2001 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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Volume |
78 |
Issue |
17 |
Pages |
2476 |
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antibunching, quantum dot |
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0003-6951 |
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502 |
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Semenov, A.; Goltsman, G.; Korneev, A. |
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Title |
Quantum detection by current carrying superconducting film |
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Journal Article |
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Year |
2001 |
Publication |
Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
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Volume |
351 |
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4 |
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349-356 |
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quantum detection, phase slip centers, quasiparticle diffusion |
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Abstract |
We describe a novel quantum detection mechanism in the superconducting film carrying supercurrent. The mechanism incorporates growing normal domain and breaking of superconductivity by the bias current. A single photon absorbed in the film creates transient normal spot that causes redistribution of the current and, consequently, increase of the current density in superconducting areas. When the current density exceeds the critical value, the film switches into resistive state and generates the voltage pulse. Analysis shows that a submicron-wide film of conventional low temperature superconductor operated in liquid helium may detect single far-infrared photon. The amplitude and duration of the voltage pulse are in the millivolt and picosecond range, respectively. The quantitative model is presented that allows simulation of the detector utilizing this detection mechanism. |
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0921-4534 |
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507 |
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Murk, A.; Kämpfer, N.; Wylde, R.; Inatani, J.; Manabe, T.; Seta, M. |
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Characterization of various quasi-optical components for the submillimeter limb-sounder SMILES |
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Conference Article |
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2001 |
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Proc. 12th Int. Symp. Space Terahertz Technol. |
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426-435 |
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limb-sounder |
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530 |
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Kasparek, W; Fernandez, A.; Hollmann, F; Wacker, R. |
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Measurements of ohmic losses of metallic reflectors at 140 GHz using a 3-mirror resonator technique |
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Journal Article |
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2001 |
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Int. J. Infrared and Millimeter Waves |
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22 |
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11 |
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1695-1707 |
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mirror, reflection index, emissivity, Fabry-Perot interferometer, subterahertz, subTHz |
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Abstract |
The reflectivity of metallic mirrors in the millimeter wave region does not only depend on the material, but also on the structure and roughness of the surface. We have performed measurements of the reflectivity of various plane and grooved metallic and graphite samples at 140 GHz. The technique is based on the comparison of the quality factor of a 2-mirror reference resonator with the quality factor of a 3-mirror resonator which has identical dimensions and includes the mirror to be tested. After a brief presentation of the theory, the set-up is described and the reflection loss for various aluminium and copper mirrors as well as vacuum compatible materials for applications in thermonuclear fusion experiments are presented and discussed. |
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581 |
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Verevkin, A.; Williams, C.; Gol’tsman, G. N.; Sobolewski, R.; Gilbert, G. |
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Single-photon superconducting detectors for practical high-speed quantum cryptography |
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Miscellaneous |
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2001 |
Publication |
OFCC/ICQI |
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OFCC/ICQI |
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Pa3 |
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NbN SSPD, SNSPD, QKD, quantum cryptography |
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We have developed an ultrafast superconducting single-photon detector with negligible dark counting rate. The detector is based on an ultrathin, submicron-wide NbN meander-type stripe and can detect individual photons in the visible to near-infrared wavelength range at a rate of at least 10 Gb/s. The above counting rate allows us to implement the NbN device to unconditionally secret quantum key distRochester, New Yorkribution in a practical, high-speed system using real-time Vernam enciphering. |
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Rochester, New York |
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Optical Society of America |
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Optical Fiber Communication Conference and International Conference on Quantum Information |
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-- from poster session. |
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1544 |
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Boreman, Glenn D. |
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Title |
A Users guide to IR detectors |
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Conference Article |
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2001 |
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Proc. SPIE |
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Proc. SPIE |
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4420 |
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79-90 |
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optical antennas |
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This paper will guide the first-time user toward proper selection and use of IR detectors for applications in industrial inspection, process control, and laser measurements. |
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no |
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RPLAB @ gujma @ |
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735 |
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Author |
Codreanu, Iulian; Boreman, Glenn D. |
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Title |
Infrared microstrip dipole antennas |
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Journal Article |
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2001 |
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Microwave and Optical Technology Letters |
Abbreviated Journal |
Microw Opt Technol Lett |
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29 |
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6 |
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381-383 |
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optical antennas |
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Abstract 10.1002/mop.1184.abs We report on the successful use of niobium microbolometers coupled to microstrip dipole antennas for the detection of midinfrared radiation. Measurements of the detector response versus antenna length performed at the 10.6 μm wavelength allowed us to identify the first three current-wave resonances along the antenna arms. The detector response was also measured as a function of the radiation wavelength in the 911 μm spectral domain. Excellent agreement between the experimental results and finite-difference time-domain (FDTD) predictions was obtained. |
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no |
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RPLAB @ gujma @ |
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738 |
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Puscasu, Irina; Boreman, Glenn D. |
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Title |
Theoretical and experimental analysis of transmission and enchanced absorption of frequency selective surfaces in the infrared |
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Conference Article |
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2001 |
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Proc. SPIE |
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Proc. SPIE |
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4293 |
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185-190 |
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optical antennas |
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A comparative study between theory and experiment is presented for transmission through lossy frequency selective surfaces (FSSs) on silicon in the 2 – 15 micrometer range. Important parameters controlling the resonance shape and location are identified: dipole length, spacing, impedance, and dielectric surroundings. Their separate influence is exhibited. The primary resonance mechanism of FSSs is the resonance of the individual metallic patches. There is no discernable resonance arising from a feed-coupled configuration. The real part of the element's impedance controls the minimum value of transmission, while scarcely affecting its location. Varying the imaginary part shifts the location of resonance, while only slightly changing the minimum value of transmission. With such fine-tuning, it is possible to make a good fit between theory and experiment near the dipole resonance on any sample. A fixed choice of impedance can provide a reasonable fit to all samples fabricated under the same conditions. The dielectric surroundings change the resonance wavelength of the FSS compared to its value in air. The presence of FSS on the substrate increases the absorptivity/emissivity of the surface in a resonant way. Such enhancement is shown for dipole and cross arrays at several wavelengths. |
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RPLAB @ gujma @ |
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753 |
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ГОСТ 2.102-68. ЕСКД. Виды и комплектность конструкторских документов |
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2001 |
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gost, detproj |
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861 |
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ГОСТ 19.301-2000. ЕСКД. Программа и методика испытаний. Требования к содержанию, оформлению и контролю качества |
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2001 |
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866 |
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ГОСТ Р 15.201-2000. Продукция производственно-технического назначения. Порядок разработки и постановки продукции на производство |
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2001 |
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876 |
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Gol’tsman, G.; Okunev, O.; Chulkova, G.; Lipatov, A.; Dzardanov, A.; Smirnov, K.; Semenov, A.; Voronov, B.; Williams, C.; Sobolewski, R. |
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Title |
Fabrication and properties of an ultrafast NbN hot-electron single-photon detector |
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Journal Article |
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2001 |
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IEEE Trans. Appl. Supercond. |
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IEEE Trans. Appl. Supercond. |
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11 |
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1 |
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574-577 |
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NbN SSPD, SNSPD |
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A new type of ultra-high-speed single-photon counter for visible and near-infrared wavebands based on an ultrathin NbN hot-electron photodetector (HEP) has been developed. The detector consists of a very narrow superconducting stripe, biased close to its critical current. An incoming photon absorbed by the stripe produces a resistive hotspot and causes an increase in the film’s supercurrent density above the critical value, leading to temporary formation of a resistive barrier across the device and an easily measurable voltage pulse. Our NbN HEP is an ultrafast (estimated response time is 30 ps; registered time, due to apparatus limitations, is 150 ps), frequency unselective device with very large intrinsic gain and negligible dark counts. We have observed sequences of output pulses, interpreted as single-photon events for very weak laser beams with wavelengths ranging from 0.5 /spl mu/m to 2.1 /spl mu/m and the signal-to-noise ratio of about 30 dB. |
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1558-2515 |
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no |
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1547 |
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Author |
Skalare, A.; McGrath, William R.; Echternach, P. M.; Leduc, H. G.; Siddiqi, I.; Verevkin, A.; Prober, D. E. |
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Aluminum hot-electron bolometer mixers at submillimeter wavelengths |
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Journal Article |
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2001 |
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IEEE Trans. Appl. Supercond. |
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11 |
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1 |
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641-644 |
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Al HEB mixer, contacts, interface, in situ, in-situ, Aluminium HEB mixer |
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Diffusion-cooled aluminum hot-electron bolometer (HEB) mixers are of interest for low-noise high resolution THz-frequency spectroscopy within astrophysics. Al HEB mixers offer operation with an order of magnitude less local oscillator power, higher intermediate frequency bandwidth and potentially lower noise than competing devices made from other materials. We report on mixer experiments at 618 GHz with devices fabricated from films with sheet resistances in the range from about 55 Ω down to about 9 Ω per square. Intermediate frequency bandwidths of up to 3 GHz were measured (1 μm long device), with absorbed local oscillator power levels of 0.5 to 6 nW and mixer conversion up to -21.5 dB. High input coupling efficiency implies that the electrons in the device are able to thermalize before escaping from the device. It was found that the long coherence length complicates mixer operations due to the proximity of the contact pads. Also, saturation at the IF frequency may be a concern for this type of device, and warrants further studies. |
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1051-8223 |
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no |
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ref919426b |
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1061 |
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Verevkin, A.; Xu, Y.; Zheng, X.; Williams, C.; Sobolewski, Roman; Okunev, O.; Smirnov, K.; Chulkova, G.; Korneev, A.; Lipatov, A.; Gol’tsman, G. N. |
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Superconducting NbN-based ultrafast hot-electron single-photon detector for infrared range |
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Conference Article |
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2001 |
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Proc. 12th Int. Symp. Space Terahertz Technol. |
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Proc. 12th Int. Symp. Space Terahertz Technol. |
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462-468 |
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NbN SSPD, SNSPD |
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no |
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1539 |
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Gol'tsman, Gregory; Semenov, Alexei; Smirnov, Konstantin; Voronov, Boris |
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Background limited quantum superconducting detector for submillimeter wavelengths |
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Conference Article |
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2001 |
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Proc. 12th Int. Symp. Space Terahertz Technol. |
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Proc. 12th Int. Symp. Space Terahertz Technol. |
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469-475 |
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Ti SQD, SQUID readout |
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no |
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1540 |
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Gol’tsman, G. N.; Smirnov, K. V. |
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Electron-phonon interaction in a two-dimensional electron gas of semiconductor heterostructures at low temperatures |
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2001 |
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Jetp Lett. |
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Jetp Lett. |
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74 |
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9 |
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474-479 |
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2DEG, AlGaAs/GaAs heterostructures |
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Theoretical and experimental works devoted to studying electron-phonon interaction in the two-dimensional electron gas of semiconductor heterostructures at low temperatures in the case of strong heating in an electric field under quasi-equilibrium conditions and in a quantizing magnetic field perpendicular to the 2D layer are considered. |
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0021-3640 |
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По итогам проектов российского фонда фундаментальных исследований. Проект РФФИ # 98-02-16897 Электрон-фононное взаимодействие в двумерном электронном газе полупроводниковых гетероструктур при низких температурах |
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1541 |
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Somani, S.; Kasapi, S.; Wilsher, K.; Lo, W.; Sobolewski, R.; Gol’tsman, G. |
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New photon detector for device analysis: Superconducting single-photon detector based on a hot electron effect |
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2001 |
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J. Vac. Sci. Technol. B |
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J. Vac. Sci. Technol. B |
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19 |
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6 |
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2766-2769 |
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NbN SSPD, SNSPD |
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A novel superconducting single-photon detector (SSPD), intrinsically capable of high quantum efficiency (up to 20%) over a wide spectral range (ultraviolet to infrared), with low dark counts (<1 cps), and fast (<40 ps) timing resolution, is described. This SSPD has been used to perform timing measurements on complementary metal–oxide–semiconductor integrated circuits (ICs) by detecting the infrared light emission from switching transistors. Measurements performed from the backside of a 0.13 μm geometry flip–chip IC are presented. Other potential applications for this detector are in telecommunications, quantum cryptography, biofluorescence, and chemical kinetics. |
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0734211X |
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no |
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1542 |
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Gol’tsman, G. N.; Okunev, O.; Chulkova, G.; Lipatov, A.; Semenov, A.; Smirnov, K.; Voronov, B.; Dzardanov, A.; Williams, C.; Sobolewski, R. |
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Picosecond superconducting single-photon optical detector |
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Journal Article |
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2001 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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79 |
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6 |
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705-707 |
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NbN SSPD, SNSPD |
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We experimentally demonstrate a supercurrent-assisted, hotspot-formation mechanism for ultrafast detection and counting of visible and infrared photons. A photon-induced hotspot leads to a temporary formation of a resistive barrier across the superconducting sensor strip and results in an easily measurable voltage pulse. Subsequent hotspot healing in ∼30 ps time frame, restores the superconductivity (zero-voltage state), and the detector is ready to register another photon. Our device consists of an ultrathin, very narrow NbN strip, maintained at 4.2 K and current-biased close to the critical current. It exhibits an experimentally measured quantum efficiency of ∼20% for 0.81 μm wavelength photons and negligible dark counts. |
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0003-6951 |
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1543 |
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Xu, Y.; Zheng, X.; Williams, C.; Verevkin, A.; Sobolewski, R.; Chulkova, G.; Lipatov, A.; Okunev, O.; Smirnov, K.; Gol’tsman, G. N. |
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Ultrafast superconducting hot-electron single-photon detector |
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Conference Article |
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2001 |
Publication |
CLEO |
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CLEO |
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345 |
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NbN SSPD, SNSPD |
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Summary form only given. The current most-pressing need is to develop a practical, GHz-range counting single-photon detector, operational at either 1.3-/spl mu/m or 1.55-/spl mu/m radiation wavelength, for novel quantum communication and quantum cryptography systems. The presented solution of the problem is to use an ultrafast hot-electron photodetector, based on superconducting thin-film microstructures. This type of device is very promising, due to the macroscopic quantum nature of superconductors. Very fast response time and the small, (meV range) value of the superconducting energy gap characterize the superconductor, leading to the efficient avalanche process even for infrared photons. |
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Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Technical Digest (IEEE Cat. No.01CH37170) |
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no |
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Call Number |
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Serial |
1545 |
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Permanent link to this record |
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Author |
Kawamura, J.; Tong, C.-Y. E.; Blundell, R.; Papa, D. C.; Hunter, T. R.; Patt, F.; Gol’tsman, G.; Gershenzon, E. |
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Title |
Terahertz-frequency waveguide NbN hot-electron bolometer mixer |
Type |
Journal Article |
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Year |
2001 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
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Volume |
11 |
Issue |
1 |
Pages |
952-954 |
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Keywords |
NbN HEB mixers |
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Abstract |
We have developed a low-noise waveguide heterodyne receiver for operation near 1 THz using phonon-cooled NbN hot-electron bolometers. The mixer elements are submicron-sized microbridges of 4 nm-thick NbN film fabricated on a quartz substrate. Operating at a bath temperature of 4.2 K, the double-sideband receiver noise temperature is 760 K at 1.02 THz and 1100 K at 1.26 THz. The local oscillator is provided by solid-state sources, and power measured at the source is less than 1 /spl mu/W. The intermediate frequency bandwidth exceeds 2 GHz. The receiver was used to make the first ground-based heterodyne detection of a celestial spectroscopic line above 1 THz. |
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ISSN |
1558-2515 |
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no |
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Call Number |
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Serial |
1546 |
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Permanent link to this record |
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Author |
Hübers, H.-W.; Schubert, J.; Krabbe, A.; Birk, M.; Wagner, G.; Semenov, A.; Gol’tsman, G.; Voronov, B.; Gershenzon, E. |
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Title |
Parylene anti-reflection coating of a quasi-optical hot-electron-bolometric mixer at terahertz frequencies |
Type |
Journal Article |
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Year |
2001 |
Publication |
Infrared Physics & Technology |
Abbreviated Journal |
Infrared Physics & Technology |
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Volume |
42 |
Issue |
1 |
Pages |
41-47 |
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Keywords |
NbN HEB mixers, anti-reflection coating |
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Abstract |
Parylene C was investigated as anti-reflection coating for silicon at terahertz frequencies. Measurements with a Fourier-transform spectrometer show that the transmittance of pure silicon can be improved by about 30% when applying a layer of Parylene C with a quarter wavelength optical thickness. The 10% bandwidth of this coating extends from 1.5 to 3 THz for a center frequency of 2.3–2.5 THz, where the transmittance is constant. Heterodyne measurements demonstrate that the noise temperature of a hot-electron-bolometric mixer can be reduced significantly by coating the silicon lens of the hybrid antenna with a quarter wavelength Parylene C layer. Compared to the same mixer with an uncoated lens the improvement is about 30% at a frequency of 2.5 THz. |
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Edition |
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ISSN |
1350-4495 |
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no |
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Call Number |
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Serial |
1548 |
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Author |
Yagoubov, P.; Hübers, H.-W.; Gol’tsman, G.; Semenov, A.; Gao, J.; Hoogeveen, R.; de Graauw, T.; Birk, M.; Selig, A.; de Korte, P. |
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Title |
Hot-electron bolometer mixers – technology for far-infrared heterodyne instruments in future atmospheric chemistry missions |
Type |
Conference Article |
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Year |
2001 |
Publication |
Proc. 3rd Int. Symp. Submillimeter Wave Earth Observation From Space |
Abbreviated Journal |
Proc. 3rd Int. Symp. Submillimeter Wave Earth Observation From Space |
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Volume |
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Issue |
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Pages |
57-69 |
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Keywords |
HEB mixers |
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Abstract |
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Address |
Delmenhorst |
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Publisher |
Logos-Verlag |
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Editor |
Buehler, S.; Berlin |
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ISBN |
3-89722-700-2 |
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Conference |
International Symposium on Submillimeter Wave Earth Observation from Space, ISSMWEOS01 |
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no |
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Call Number |
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Serial |
1549 |
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Author |
Antipov, S. V.; Svechnikov, S. I.; Smirnov, K. V.; Vakhtomin, Y. B.; Finkel, M. I.; Goltsman, G. N.; Gershenzon, E. M. |
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Title |
Noise temperature of quasioptical NbN hot electron bolometer mixers at 900 GHz |
Type |
Journal Article |
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Year |
2001 |
Publication |
Physics of Vibrations |
Abbreviated Journal |
Physics of Vibrations |
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Volume |
9 |
Issue |
4 |
Pages |
242-245 |
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Keywords |
NbN HEB mixers |
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Edition |
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ISSN |
1069-1227 |
ISBN |
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no |
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Serial |
1550 |
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Permanent link to this record |
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Author |
Svechnikov, S. I.; Antipov, S. V.; Vakhtomin, Y. B.; Goltsman, G. N.; Gershenzon, E. M.; Cherednichenko, S. I.; Kroug, M.; Kollberg, E. |
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Title |
Conversion and noise bandwidths of terahertz NbN hot-electron bolometer mixers |
Type |
Journal Article |
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Year |
2001 |
Publication |
Physics of Vibrations |
Abbreviated Journal |
Physics of Vibrations |
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Volume |
9 |
Issue |
3 |
Pages |
205-210 |
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Keywords |
NbN HEB mixers |
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Series Volume |
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Edition |
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ISSN |
1069-1227 |
ISBN |
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Approved |
no |
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Call Number |
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Serial |
1551 |
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Permanent link to this record |
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Author |
Mel’nikov, A. P.; Gurvich, Y. A.; Shestakov, L. N.; Gershenzon, E. M. |
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Title |
Magnetic field effects on the nonohmic impurity conduction of uncompensated crystalline silicon |
Type |
Journal Article |
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Year |
2001 |
Publication |
Jetp Lett. |
Abbreviated Journal |
Jetp Lett. |
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Volume |
73 |
Issue |
1 |
Pages |
44-47 |
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Keywords |
uncompensated crystalline silicon, nonohmic impurity conduction, magnetic field |
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Abstract |
The impurity conduction of a series of crystalline silicon samples with the concentration of major impurity N ≈ 3 × 1016 cm−3 and with a varied, but very small, compensation K was measured as a function of the electric field E in various magnetic fields H-σ(H, E). It was found that, at K < 10−3 and in moderate E, where these samples are characterized by a negative nonohmicity (dσ(0, E)/dE < 0), the ratio σ(H, E)/σ(0, E) > 1 (negative magnetoresistance). With increasing E, these inequalities are simultaneously reversed (positive nonohmicity and positive magnetoresistance). It is suggested that both negative and positive nonohmicities are due to electron transitions in electric fields from impurity ground states to states in the Mott-Hubbard gap. |
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ISSN |
0021-3640 |
ISBN |
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no |
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Call Number |
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Serial |
1752 |
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Author |
Гольцман, Г. Н.; Смирнов, К. В. |
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Title |
По итогам проектов российского фонда фундаментальных исследований. Проект РФФИ # 98-02-16897 Электрон-фононное взаимодействие в двумерном электронном газе полупроводниковых гетероструктур при низких температурах |
Type |
Journal Article |
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Year |
2001 |
Publication |
Письма в ЖЭТФ |
Abbreviated Journal |
Письма в ЖЭТФ |
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Volume |
74 |
Issue |
9 |
Pages |
532-538 |
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Keywords |
2DEG, AlGaAs/GaAs heterostructures |
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Abstract |
Рассмотрены теоретические и экспериментальные работы, посвященные изучению электрон-фононного взаимодействия в двумерном электронном газе полупроводниковых гетероструктур при низких температурах в случае сильного разогрева в электрическом поле, в квазиравновесных условиях и в квантующем магнитном поле, перпендикулярном 2D слою. |
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Notes |
Duplicated as 1541: “Electron-phonon interaction in a two-dimensional electron gas of semiconductor heterostructures at low temperatures” |
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no |
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Call Number |
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Serial |
1832 |
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Permanent link to this record |
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Author |
Kroug, M. |
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Title |
Hot electron bolometric mixers for a quasi-optical terahertz receiver |
Type |
Book Whole |
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Year |
2001 |
Publication |
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Abbreviated Journal |
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Thesis |
Ph.D. thesis |
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Place of Publication |
Chalmers University of Technology, Gothenburg, Sweden |
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no |
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Serial |
310 |
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Permanent link to this record |
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Author |
Danny Wilms Floet |
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Title |
Hotspot mixing in THz niobium superconducting hot electron bolometer mixers |
Type |
Manuscript |
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Year |
2001 |
Publication |
Delft University of Technology |
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Thesis |
Ph.D. thesis |
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Place of Publication |
Netherlands |
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no |
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Call Number |
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Serial |
932 |
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Author |
Karpov, A.; Miller, D.; Rice, F.; Zmuidzinas, J.; Stern, J. A.; Bumble, B.; LeDuc, H. G. |
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Title |
Low noise 1.2 THz SIS receiver |
Type |
Conference Article |
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Year |
2001 |
Publication |
Proc. 12th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
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Volume |
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Pages |
21-22 |
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Place of Publication |
San Diego, CA, USA |
Editor |
Jet Propulsion Laboratory, California Inst.it.u.t.e of Technology |
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no |
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Call Number |
RPLAB @ s @ sis_650K_at_1p13THz |
Serial |
316 |
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Author |
Shi, S. C.; Chin, C. C.; Wang, M. J.; Shan, W. L.; Zhang, W.; Noguchi, T. |
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Title |
Development of a 600–720 GHz SIS Mixer for the SMART |
Type |
Conference Article |
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Year |
2001 |
Publication |
Proc. 12th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
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Volume |
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Pages |
215 |
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Place of Publication |
San Diego, CA, USA |
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Jet Propulsion Laboratory, California Inst.it.u.t.e of Technology |
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no |
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Call Number |
RPLAB @ s @ sis_145K_at_p618THz |
Serial |
317 |
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Author |
Cherednichenko, S.; Kroug, M.; Merkel, H.; Kollberg, E.; Loudkov, D.; Smirnov, K.; Voronov, B.; Gol'tsman, G.; Gershenzon, E. |
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Title |
Local oscillator power requirement and saturation effects in NbN HEB mixers |
Type |
Conference Article |
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Year |
2001 |
Publication |
Proc. 12th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 12th Int. Symp. Space Terahertz Technol. |
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Volume |
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Issue |
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Pages |
273-285 |
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Keywords |
NbN HEB mixers, LO power, local oscillator power, saturation effect, dynamic range |
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Abstract |
The local oscillator power required for NbN hot-electron bolometric mixers (P LO ) was investigated with respect to mixer size, critical temperature and ambient temperature. P LO can be decreased by a factor of 10 as the mixer size decreases from 4×0.4 µm 2 to 0.6×0.13 µm 2 . For the smallest volume mixer the optimal local oscillator power was found to be 15 nW. We found that for such mixer no signal compression was observed up to an input signal of 2 nW which corresponds to an equivalent input load of 20,000 K. For a constant mixer volume, reduction of T c can decrease optimal local oscillator power at least by a factor of 2 without a deterioration of the receiver noise temperature. Bath temperature was found to have minor effect on the receiver characteristics. |
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Place of Publication |
San Diego, CA, USA |
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Jet Propulsion Laboratory, California Inst.it.u.t.e of Technology |
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no |
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Call Number |
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Serial |
318 |
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Permanent link to this record |
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Author |
Kroug, M.; Cherednichenko, S.; Choumas, M.; Merkel, H.; Kollberg, E.; Hübers, H.-W.; Richter, H.; Loudkov, D.; Voronov, B.; Gol'Tsman, G. |
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Title |
HEB quasi-optical heterodyne receiver for THz frequencies |
Type |
Conference Article |
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Year |
2001 |
Publication |
Proc. 12th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
244-252 |
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Keywords |
HEB mixer, NbN, MgO, conversion gain bandwidth, noise temperature |
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San Diego, CA, USA |
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no |
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Serial |
319 |
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Author |
Merkel, H. F.; Khosropanah, P.; Sigfrid Yngvesson, K.; Cherednichenko, S.; Kroug, M.; Adam, A.; Kollberg, E. |
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Title |
An active zone small signal model for hot-electron bolometric mixers |
Type |
Conference Article |
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Year |
2001 |
Publication |
Proc. 12th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
55 |
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San Diego, CA, USA |
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no |
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Call Number |
RPLAB @ s @ losses_in_contacts_merkel |
Serial |
320 |
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Author |
Betz, A. L.; Boreiko, R. T.; Sivananthan, S.; Ashokan, R. |
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Title |
HgCdTe photoconductive mixers for 2-8 THz |
Type |
Conference Article |
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Year |
2001 |
Publication |
Proc. 12th Int. Symp. Space Terahertz Technol. |
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92-101 |
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San Diego, CA, USA |
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Jet Propulsion Laboratory, California Inst.it.u.t.e of Technology |
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Call Number |
RPLAB @ s @ HgCdTe_2p5hf_to_k_at_10um |
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321 |
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Author |
Hübers, H.-W.; Semenov, A. D.; Richter, H.; Schubert, J.; Hadjiloucas, S.; Bowen, J. W.; Gol'tsman, G.; Voronov, B. M.; Gershenzon, E. M. |
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Title |
Antenna pattern of the quasi-optical hot-electron bolometric mixer at terahertz frequencies |
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Conference Article |
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Year |
2001 |
Publication |
Proc. 12th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 12th Int. Symp. Space Terahertz Technol. |
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Pages |
286-296 |
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NbN HEB mixers |
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San Diego, CA, USA |
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no |
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323 |
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