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Yu. M. Andreev A. A. Ionin I. O. Kinyaevskii Yu. M. Klimachev A. Yu. Kozlov A. A. Kotkov G. V. Lanskii 《Bulletin of the Lebedev Physics Institute》2010,37(1):11-12
The experimental results of the study of CO laser frequency doubling in ZnGeP2 and GaSe nonlinear crystals of high optical quality are presented. A multifrequency low-pressure Q-switched CO laser and
a selective pulsed electroionization mode-locked CO laser with cryogenic cooling were used in the experiments. The highest
external factor of radiation conversion into the second harmonic of the pulse-periodic Q-switched CO laser and pulsed mode-locked
CO laser was 1% and 3.5%, respectively. Theoretical calculations showed the possibility of obtaining far IR and terahertz
radiation using difference frequency generation of CO laser lines in these crystals. 相似文献
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A.?A.?Ionin I.?O.?Kinyaevskii Yu.?M.?KlimachevEmail author A.?Yu.?Kozlov A.?A.?Kotkov 《Physics of Atomic Nuclei》2017,80(11):1635-1641
This paper presents the results of studies aimed at the creation of a hybrid laser system which is composed of a gas lasers and a nonlinear crystal and appreciably broadens and enriches the radiation spectrum of these lasers. A highly efficient conversion (37%) is attained when generating the second harmonic in a ZnGeP2 crystal owing to an increase in the peak power of CO laser radiation in the mode locking regime. The two-cascade conversion (generation of both sum and difference frequencies) of radiation of a broadband CO laser in the single sample of such nonlinear crystals as ZnGeP2 and AgGaSe2 is demonstrated. In this case, the radiation spectrum is broadened by nearly a factor of two, and the number of detected spectral lines grows by a factor of four. The use of a comparatively simple laser system of gas-discharge CO and CO2 lasers to conversion in AgGaSe2 results in laser radiation tunable over a set of narrow spectral lines within a range from 2.5 to 16.6 μm (more than two and a half octaves). 相似文献
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A. A. Ionin I. O. Kinyaevskii Yu. M. Klimachev 《Bulletin of the Lebedev Physics Institute》2014,41(8):222-225
The phase matching conditions in the ZnGeP2 crystal are calculated and analyzed from the viewpoint of broadband frequency conversion of mid-IR radiation. The frequency conversion of Cr:ZnS laser radiation in the ZnGeP2 crystal is calculated. The results show the possibility of developing a broadband laser source whose spectrum spans a wavelength range of 3.2–9.5 µm. 相似文献
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Nikolaev N. A. Mamrashev A. A. Andreev Yu. M. Ezhov D. M. Lanskii G. V. Lubenko D. M. Kinyaevskii I. O. Solntsev V. P. 《Russian Physics Journal》2021,63(12):2066-2069
Russian Physics Journal - Spectral dependences of components of the refractive index and absorption coefficient in a Li2B4O7 (LB4) nonlinear crystal are determined in the THz range for the first... 相似文献
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