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| Author |
Phillips, T. G.; Keene, J. |
| Title |
Submillimeter astronomy [heterodyne spectroscopy] |
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Conference Article |
| Year |
1992 |
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Proc. IEEE |
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80 |
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1662-1678 |
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Lindgren, M.; Zorin, M. A.; Trifonov, V.; Danerud, M.; Winkler, D.; Karasik, B. S.; Gol'tsman, G. N.; Gershenzon, E. M. |
| Title |
Optical mixing in a patterned YBa2Cu3O7-δ thin film |
Type |
Journal Article |
| Year |
1994 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
65 |
Issue |
26 |
Pages |
3398-3400 |
| Keywords |
YBCO HTS HEB mixer, bandwidth |
| Abstract |
Mixing of 1.56 µm infrared radiation from two lasers in a high quality YBa2Cu3O7-δ thin film, patterned to parallel strips, was demonstrated. A mixer bandwidth of 18 GHz, limited by the measurement system, was obtained. A model based on nonequilibrium electron heating gives a good fit to the data and predicts an intrinsic mixer bandwidth in excess of 100 GHz, operating in the whole infrared spectrum. Reduction of bolometric effects and ways to decrease the conversion loss of the mixer is discussed. The minimum conversion loss is expected to be ~10 dB. |
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0003-6951 |
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Gousev, Yu. P.; Gol'tsman, G. N.; Semenov, A. D.; Gershenzon, E. M.; Nebosis, R. S.; Heusinger, M. A.; Renk, K. F. |
| Title |
Broadband ultrafast superconducting NbN detector for electromagnetic radiation |
Type |
Journal Article |
| Year |
1994 |
Publication |
J. Appl. Phys. |
Abbreviated Journal |
J. Appl. Phys. |
| Volume |
75 |
Issue |
7 |
Pages |
3695-3697 |
| Keywords |
NbN HEB |
| Abstract |
An ultrafast detector that is sensitive to radiation in a broad spectral range from submillimeter waves to visible light is reported. It consists of a structured NbN thin film cooled to a temperature below Tc (∼11 K). Using 20 ps pulses of a GaAs laser, we observed signal pulses with both rise and decay time of about 50 ps. From the analysis of a mixing experiment with submillimeter radiation we estimate an intrinsic response time of the detector of ∼12 ps. The sensitivity was found to be similar for the near‐infrared and submillimeter radiation. Broadband sensitivity and short response time are attributed to a quasiparticle heating effect. |
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252 |
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Hong, Kyushik; Marsh, P. F.; Geok-Ing Ng; Pavlidis, D.; Hong, Chang-Hee |
| Title |
Optimization of MOVPE grown InxAl1-xAs/In0.53Ga0.47As planar heteroepitaxial Schottky diodes for terahertz applications |
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Journal Article |
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1994 |
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IEEE Trans. Electron Devices |
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41 |
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9 |
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1489-1497 |
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253 |
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Hans Ekstrom; Karasik, Boris S.; Kollberg, Erik L.; Sigfrid Yngvesson |
| Title |
Conversion gain and noise of niobium superconducting hot–electron–mixers |
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Journal Article |
| Year |
1995 |
Publication |
IEEE Trans. Appl. Supercond. |
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43 |
Issue |
4 |
Pages |
938-947 |
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Nb HEB mixers |
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