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| Author |
Kostiuk, T.; Spears, D. |
| Title |
30 μm heterodyne receiver |
Type |
Journal Article |
| Year |
1987 |
Publication |
Int. J. Infrared and Millimeter Waves |
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| Volume |
8 |
Issue |
10 |
Pages |
1269-1279 |
| Keywords |
HgCdTe detector mixer |
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235 |
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| Author |
Uchiki, Hisao; Kobayashi, Takayoshi; Sakaki, Hiroyuki |
| Title |
Photoluminescence and energyâ€loss rates in GaAs quantum wells under highâ€density excitation |
Type |
Journal Article |
| Year |
1987 |
Publication |
J. Appl. Phys. |
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| Volume |
62 |
Issue |
3 |
Pages |
1010-1016 |
| Keywords |
2DEG, GaAs/AlGaAs, heat flow, electron-phonon, hole-phonon, carrier-phonon, interactions |
| Abstract |
The timeâ€resolved luminescence spectra from excited conduction subbands in three samples of multiâ€quantumâ€well GaAs/AlxGa1-xAs (x=0.3 and 1) semiconductors with several well widths and barrier heights were obtained under highâ€density excitations by a 30â€ps pulsed laser at 532 nm, which generated electron–hole pairs to the concentration of 1010–1013/cm2 per well per pulse at 77 K. The temperature and the Fermi energy of electron were determined by fitting best the constructed timeâ€resolved spectrum to the observed, and the timeâ€dependent electron energy was obtained by using these parameters. The energyâ€loss rates of hot electrons are at least twice smaller than the calculated ones induced by the electronâ€polar phonon scattering, including the screening effect due to the high carrier density. |
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635 |
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ГОСТ 2.119-73. ЕСКД. Эскизный проект |
Type |
Book Whole |
| Year |
1987 |
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gost, detproj |
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867 |
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| Author |
Gurevich, A. Vl.; Mints, R. G. |
| Title |
Self-heating in normal metals and superconductors |
Type |
Journal Article |
| Year |
1987 |
Publication |
Rev. Mod. Phys. |
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59 |
Issue |
4 |
Pages |
941-1000 |
| Keywords |
HEB, Joule self-heating effect |
| Abstract |
This review is devoted to the physics of current-carrying superconductors and normal metals having two or more stable states sustained by Joule self-heating. The creation, propagation, and localization of electrothermal domains and switching waves leading to the transition from one stable state to another in uniform and nonuniform samples are treated in detail. The connection between thermal bistability and hysteresis, dropping and stepped current-voltage characteristics, self-induced oscillations of current and voltage, selfreplication of electrothermal domains, and the formation of periodic and stochastic resistive structures are considered. |
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917 |
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Gershenzon, E. M.; Gol'tsman, G. N.; Karasik, B. S.; Semenov, A. D. |
| Title |
Measurement of the energy gap in the compound YBaCu3O9-δ on the basis of the IR absorption spectrum |
Type |
Journal Article |
| Year |
1987 |
Publication |
JETP Lett. |
Abbreviated Journal |
JETP Lett. |
| Volume |
46 |
Issue |
5 |
Pages |
237-238 |
| Keywords |
YBCO HTS detectors |
| Abstract |
For the first time the long-wave infrared absorption spectrum has been measured by means of the bolometric effect and energy gap for high-temperature superconducting ceramics YBa/sub 2/Cu/sub 3/O/sub 9-delta/ has been determined from absorption threshold. 2delta/kT/sub c/ value is equal to 0.6. |
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1703 |
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