Records |
Author |
Semenov, A. D.; Gol’tsman, G. N.; Gogidze, I. G.; Sergeev, A. V.; Gershenzon, E. M.; Lang, P. T.; Renk, K. F. |
Title |
Subnanosecond photoresponse of a YBaCuO thin film to infrared and visible radiation by quasiparticle induced suppression of superconductivity |
Type |
Journal Article |
Year |
1992 |
Publication |
Appl. Phys. Lett. |
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Appl. Phys. Lett. |
Volume |
60 |
Issue |
7 |
Pages |
903-905 |
Keywords |
YBCO HTS detectors |
Abstract |
We observed subnanosecond photoresponse of a structured superconducting YBa2Cu3O7−δ thin film to infrared and visible radiation. We measured the voltage response of a current biased film (thickness 700 Å) in a resistive state to radiation pulses. From our results we conclude a response time of about 90 ps and a responsivity of about 4×1010 Ω/J. We attribute the response to Cooper pair breaking and suppression of the superconducting energy gap induced by nonequilibrium quasiparticles. |
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0003-6951 |
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1672 |
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Author |
Siemsen, K. J.; Bernard, J. E.; Madej, A. A.; Marmet, L. |
Title |
Absolute frequency measurement of a CO2/OsO4 stabilized laser at 28.8 THz |
Type |
Journal Article |
Year |
2001 |
Publication |
Applied Physics B: Lasers and Optics |
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Appl. Phys. B: Lasers and Optics |
Volume |
72 |
Issue |
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Pages |
567-573 |
Keywords |
HgCdTe detector |
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462 |
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Author |
Jiang, Leaf A.; Luu, Jane X. |
Title |
Heterodyne detection with a weak local oscillator |
Type |
Journal Article |
Year |
2008 |
Publication |
Appl. Opt. |
Abbreviated Journal ![sorted by Abbreviated Journal field, descending order (down)](img/sort_desc.gif) |
Appl. Opt. |
Volume |
47 |
Issue |
10 |
Pages |
1486-1503 |
Keywords |
weak local oscillator, weak LO, photon-counting detector, photon-counting mixer, counter detector, counter mixer, PD mixer, PCD mixer |
Abstract |
eterodyne detection in the limit of weak (a few photons) local oscillator and signal power levels has been largely neglected in the past, as authors almost always assumed that the noise was dominated by the shot noise from a strong local oscillator. We present the theory for heterodyne detection of diffuse and specular targets at arbitrary power levels, including the case where the local oscillator power is only a few photons per coherent integration period. The theory was tested with experimental results, and was found to show good agreement. We show how to interpret the power spectral density of the heterodyne signal and how to determine the optimal number of signal and local oscillator photons per coherent integration. |
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979 |
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Dickert, F. L.; Haunschild, A.; Kuschow, V.; Reif, M.; Stathopulos, H. |
Title |
Mass-sensitive detection of solvent vapors. Mechanistic studies on host-guest sensor principles by FT-IR spectroscopy and BET adsorption analysis |
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Journal Article |
Year |
1996 |
Publication |
Analytical Chemistry |
Abbreviated Journal ![sorted by Abbreviated Journal field, descending order (down)](img/sort_desc.gif) |
Anal. Chem. |
Volume |
68 |
Issue |
6 |
Pages |
1058-1061 |
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supramolecular recognition, quartz crystal microbalance, QCM, surface acoustic wave, SAW, mass-sensitive sensor, detector, calixarenes, MM3 force field, Brunauer, Emmett and Teller theory, BET |
Abstract |
Chemical sensors, based on highly mass sensitive QMB or SAW devices, coated with thin layers of calixarenes, enable the detection of organic solvent vapours, especially halogenated or aromatic hydrocarbons, down to a few ppm. Force field calculations allow the tailoring of these sensor materials seeing that the predicted interaction energies between the host molecules and a large variety of analytes are linearly correlated to the measured sensor effects. These correlations and also BET adsorption analysis prove the analyte recognition properties of these calixarene coatings to be mainly based on host/guest inclusion principles. |
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0003-2700 |
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562 |
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Palma, F.; Teppe, F.; Fatimy, A. E.; Green, R.; Xu, J.; Vachontin, Y.; Tredicucci, A.; Goltsman, G.; Knap, W. |
Title |
THz communication system based on a THz quantum cascade laser and a hot electron bolometer |
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Conference Article |
Year |
2010 |
Publication |
35th Int. Conf. Infrared, Millimeter, and Terahertz Waves |
Abbreviated Journal ![sorted by Abbreviated Journal field, descending order (down)](img/sort_desc.gif) |
35th Int. Conf. Infrared, Millimeter, and Terahertz Waves |
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11623798 (1 to 2) |
Keywords |
QCL, HEB detector |
Abstract |
We present the experimental study of the direct emission – detection system based on the THz Quantum Cascade Laser as a source and Hot Electron Bolometer (HEB) detector – in view of its application as an optical communication system. We show that the system can efficiently transmit the QCL Terahertz pulses. We estimate the maximal modulation speed of the system to be about several GHz and show that it is limited only by the QCL pulse power supply, detector amplifier and connection line/wires parameters. |
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1391 |
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Author |
Kostiuk, Theodor |
Title |
Heterodyne spectroscopy in the thermal infrared region: a window on physics and chemistry |
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Conference Article |
Year |
2003 |
Publication |
Proc. International Thermal Detectors Workshop (TDW'03), session 7 (Heterodyne detectors) |
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HgCdTe detector |
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3501 University Boulevar East Adelphi, MD 20783 |
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University of Maryland Inn and Conference Center |
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372 |
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Author |
Arams, F.; Allen, C.; Peyton, B.; Sard, E. |
Title |
Millimeter mixing and detection in bulk InSb |
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Conference Article |
Year |
1966 |
Publication |
Proc. IEEE |
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54 |
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4 |
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612-622 |
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InSb, mixer, detector |
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219 |
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Author |
Kostiuk, T.; Spears, D. |
Title |
30 μm heterodyne receiver |
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Journal Article |
Year |
1987 |
Publication |
Int. J. Infrared and Millimeter Waves |
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8 |
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10 |
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1269-1279 |
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HgCdTe detector mixer |
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235 |
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Gershenson, M. E.; Gong, D.; Sato, T.; Karasik, B. S.; Sergeev, A. V. |
Title |
Millisecond electron-phonon relaxation in ultrathin disordered metal films at millikelvin temperatures |
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Journal Article |
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2001 |
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Appl. Phys. Lett. |
Abbreviated Journal ![sorted by Abbreviated Journal field, descending order (down)](img/sort_desc.gif) |
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79 |
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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 |
Gordon, N. T.; Lees, D. J.; Bowen, G.; Phillips, T. S.; Haigh, M.; Jones, C. L.; Maxey, C. D.; Hipwood, L.; Catchpole, R. A. |
Title |
HgCdTe detectors operating above 200 K |
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Journal Article |
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2006 |
Publication |
J. Electron. Mater. |
Abbreviated Journal ![sorted by Abbreviated Journal field, descending order (down)](img/sort_desc.gif) |
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35 |
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6 |
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1140-1144 |
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HgCdTe detector |
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0361-5235 |
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467 |
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