| Records |
| Author |
Ito, Hiroshi |
| Title |
High frequency photodiode work in Japan |
Type |
Manuscript |
| Year |
2002 |
Publication |
Report at NTT photonics laboratories |
Abbreviated Journal |
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Issue |
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Pages  |
1-4 |
| Keywords |
THz, terahertz communications, photodiode |
| Abstract |
The recent progress in the device performance of the uni-traveling-carrier photodiode (UTC-PD) is described. The UTC-PD utilizes only electrons as the active carriers, and this unique feature is the key to achieving excellent high-speed and high-output characteristics simultaneously. The achieved performance includes a record 3-dB bandwidth of 310 GHz, high-power photonic millimeter-wave generation with an output power of over +13 dBm at 100 GHz, high-output-voltage photoreceiver operation at bit rates of up to 80 Gbit/s, and demultiplexing operation at 200 Gbit/s using a monolithic PD-EAM optical gate. |
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no |
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Serial |
596 |
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| Author |
Maslennikov, S.; Antipov, S.; Shishkov, A.; Svechnikov, S.; Voronov, B.; Smirnov, K.; Kaurova, N.; Drakinski, V.; Gol'tsman, G. |
| Title |
NbN HEB mixer noise temperature measurements with hot/cold load mounted inside the helium cryostat at 300 GHz |
Type |
Conference Article |
| Year |
2002 |
Publication |
Proc. Int. Student Seminar on Microwave Appl. of Novel Physical Phenomena supported by IEEE |
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LETI |
Place of Publication |
St.-Petersburg |
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no |
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Serial |
324 |
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| Author |
Shytov, A. V.; Levitov, L. S.; Beenakker, C. W. J. |
| Title |
Electromechanical noise in a diffusive conductor |
Type |
Journal Article |
| Year |
2002 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
| Volume |
88 |
Issue |
22 |
Pages |
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| Abstract |
Electrons moving in a conductor can transfer momentum to the lattice via collisions with impurities and boundaries, giving rise to a fluctuating mechanical stress tensor. The root-mean-squared momentum transfer per scattering event in a disordered metal (of dimension L greater than the mean free path l and screening length xi) is found to be reduced below the Fermi momentum by a factor of order l/L for shear fluctuations and (xi/L)^2 for pressure fluctuations. The excitation of an elastic bending mode by the shear fluctuations is estimated to fall within current experimental sensitivity for a nanomechanical oscillator. |
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0031-9007 |
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no |
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RPLAB @ s @ |
Serial |
433 |
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| Author |
Ediss, G. A.; Koller, D. |
| Title |
68.5 to 118 GHz measurements of possible infrared filter materials: black polyethylene, Zitex, and grooved and un-grooved fluorogold and HDPE |
Type |
Miscellaneous |
| Year |
2002 |
Publication |
ALMA Memo |
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Issue |
412 |
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RPLAB @ s @ |
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446 |
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| Author |
Benford, Dominic J.; Moseley, S. Harvey; Chervenak, Jay A. |
| Title |
Mission requirements for ultralow-background, large format bolometer arrays |
Type |
Conference Article |
| Year |
2002 |
Publication |
Proc. Far-Infrared Submillimeter, & Millimeter Detector Workshop |
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applicationsns |
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Place of Publication |
Monterey, California |
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no |
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Serial |
490 |
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| Author |
Betzler, Klaus; Physik, Fachbereich |
| Title |
Fabry-Perot Interferometer |
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Manuscript |
| Year |
2002 |
Publication |
Universität Osnabrück |
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no |
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497 |
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| Author |
Amzajerdian, Farzin |
| Title |
Analysis of optimum heterodyne receivers for coherent lidar applications |
Type |
Miscellaneous |
| Year |
2002 |
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no |
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505 |
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| Author |
Hübers, Heinz-Wilhelm; Semenov, A.; Richter, H.; Smirnov, K.; Gol'tsman, G.; Voronov, B. |
| Title |
Phonon cooled far-infrared hot electron bolometer mixer |
Type |
Abstract |
| Year |
2002 |
Publication |
NASA/ADS |
Abbreviated Journal |
NASA/ADS |
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NbN HEB mixers |
| Abstract |
Heterodyne receivers for applications in astronomy need quantum-limited sensitivity. At frequencies above 1.4 THz superconducting hot electron bolometers (HEB) can be used to achieve this goal. We present results of the development of a quasi-optical phonon-cooled NbN HEB mixer for GREAT, the German heterodyne receiver for SOFIA. Different mixers with logarithmic spiral and double slot feed antennas have been investigated with respect to their noise temperature, conversion loss, linearity and beam pattern at several frequencies between 0.7 THz and 5.2 THz. At 2.5 THz a double sideband noise temperature of 2200 K was achieved. The conversion loss was 16 dB. The response of the mixer was linear up to 400 K load temperature. This performance was verified by measuring an emission line of methanol at 2.5 THz. The results demonstrate that the NbN HEB is very well suited as a mixer for FIR heterodyne receivers. |
| Address |
Monterey, CA |
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Far-IR, Sub-mm & MM Detector Technology Workshop, 1-3 April 2002 |
| Notes |
id.37 |
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no |
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Serial |
1534 |
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| Author |
Okunev, O.; Smirnov, K.; Chulkova, G.; Korneev, A.; Lipatov, A.; Gol'tsman, G.; Zhang, J.; Slysz, W.; Verevkin, A.; Sobolewski, Roman |
| Title |
Ultrafast NBN hot-electron single-photon detectors for electronic applications |
Type |
Abstract |
| Year |
2002 |
Publication |
Abstracts 8-th IUMRS-ICEM |
Abbreviated Journal |
Abstracts 8-th IUMRS-ICEM |
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NbN SSPD, SNSPD |
| Abstract |
We present a new, simple to manufacture, single-photon detector (SPD), which can work from ultraviolet to near-infrared wavelengths of optical radiation and combines high speed of operation, high quantum efficiency (QE), and very low dark counts. The devices are superconducting and operate at temperature below 5 K. The physics of operation of our SPD is based on formation of a photon-induced resistive hotspot and subsequent appearance of a transient resistive barrier across an ultrathin and submicron-wide superconductor. |
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8th IUMRS International Conference on Electronic Materials |
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no |
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1532 |
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| Author |
Semenov, Alexei; Hübers, Heinz-Wilhelm; Engel, Andreas; Gol'tsman, Gregory N. |
| Title |
Background limited superconducting quantum detector for astronomy |
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Abstract |
| Year |
2002 |
Publication |
NASA/ADS |
Abbreviated Journal |
NASA/ADS |
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SQD |
| Abstract |
We present the concept of the superconducting quantum detector for astronomy. Response to a single absorbed photon appears due to successive formation of a normal spot and phase-slip-centers in a narrow strip carrying sub-critical supercurrent. The detector simultaneously has a moderate energy resolution and a variable cut-off wavelength depending on both the material used and operation conditions. We simulated performance of the background-limited direct detector having the 100- micrometer cut-off wavelength. Low dark count rate will allow to realize 10-21 W Hz-1/2 noise equivalent power at 4 K background radiation. The intrinsic recovery time of the counter is rather determined by diffusion of nonequilibrium electrons, thus, thermal fluctuations do not hamper energy resolution of the detector. Provided an appropriate readout technique, the resolution should be better than 1/20 at 50- micrometer wavelength. Planar layout and relatively simple technology favor integration of the detector into an array. |
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Monterey, CA |
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Far-IR, Sub-mm & MM Detector Technology Workshop, held 1-3 April 2002 |
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1535 |
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