Zobrazeno 1 - 10
of 11
pro vyhledávání: '"E M Krasavina"'
Publikováno v:
Soviet Journal of Quantum Electronics. 5:1069-1074
An investigation was made of catastrophic degradation of electron-beam-pumped gallium arsenide lasers operating at temperatures of 80 and 300°K. The critical radiation density in the semiconductor resonator resulting in its damage ranged from 2 to 1
Publikováno v:
Soviet Journal of Quantum Electronics. 4:1446-1449
An investigation was made of the photoluminescence spectra and of the parameters of laser radiation generated by electron excitation of n- and p-type AlxGa1–xAs solid solutions with compositions in the range corresponding to the direct band structu
Publikováno v:
Soviet Journal of Quantum Electronics. 16:1672-1674
An investigation was made of the causes of degradation of the active elements of sealed semiconductor GaAs lasers pumped transversely by electron beam pulses. Tests involving application of 5×106 pulses under the usual pumping conditions indicated t
Autor:
E V Matveenko, E M Krasavina, M M Zverev, V K Yakushin, I V Kryukova, V A Ushakhin, N. N. Kostin, O V Bogdankevich, V F Pevtsov, S. P. Kopyt
Publikováno v:
Soviet Journal of Quantum Electronics. 15:1000-1002
A report is given of the fabrication of multielement uncooled lasers with an output power of 17 MW per pulse in the case of cadmium sulfide and 4.5 MW in the case of gallium arsenide pumped longitudinally by an electron beam. Ways of improving the ch
Autor:
E M Krasavina, V. P. Tsyganov, S. P. Prokofeva, I V Kryukova, E V Matveenko, L V Druzhinina, L M Dolginov, E G Shevchenko, Yu V Petrushenko
Publikováno v:
Soviet Journal of Quantum Electronics. 6:1367-1369
Epitaxial films of GaxIn1–xAs, GaAsxSb1–x, and GaxIn1–xAs1–yPy were excited with 50 keV electrons and the characteristics of photoluminescence and coherent radiation emitted from these films were determined at temperatures of 80 and 300°K. A
Publikováno v:
Soviet Journal of Quantum Electronics. 5:577-579
An investigation was made of the parameters of the radiation emitted by electron-beam-excited lasers made of gallium arsenide single crystals prepared by different methods. A correlation was established between the radiative characteristics of these
Publikováno v:
Soviet Journal of Quantum Electronics. 16:1408-1410
Brittle fracture, initiated by initial polishing defects and low-angle boundaries, occurred in semiconductor crystals under the action of a high-intensity pulsed electron beam. The damage threshold increased along the series of compounds CdS, ZnSe, Z
Autor:
L. G. Novozhilova, O V Bogdankevich, E M Krasavina, M M Zverev, V F Pevtsov, I V Kryukova, S. P. Kopyt
Publikováno v:
Soviet Journal of Quantum Electronics. 17:373-375
Pulse-periodic operation was attained in multicell semiconductor lasers made of ZnO, ZnSe, CdS, and GaAs crystals. At room temperature of the active element when the pulse repetition frequency was 50 Hz and the pulse duration was 8 nsec, the followin
Autor:
V A Ushakhin, M M Zverev, I. V. Kryukova, V F Pevtsov, E. M. Krasavina, N. D. Vorobev, V K Yakushin, O V Bogdankevich, S. P. Kopyt
Publikováno v:
Soviet Journal of Quantum Electronics. 15:1002-1003
A pulsed multielement semiconductor laser with an unstable resonator was made of cadmium sulfide. Narrowing of the angular distribution of the output radiation to 30' for an output power of 200 kW was achieved.
Autor:
E M Krasavina, I V Kryukova
Publikováno v:
Soviet Journal of Quantum Electronics. 9:656-657
An investigation was made of the degradation of electron-pumped gallium arsenide lasers operating at room temperature. One of the reasons for the degradation of these uncooled lasers was (in contrast to the cooled devices) an increase in the density