A Broadband Infrared Laser Source (2.5–17 μm) for Plasma Diagnostics
- Russian Academy of Sciences, Laboratory of Gas Lasers, Lebedev Physical Institute (Russian Federation)
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 ZnGeP{sub 2} 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 ZnGeP{sub 2} and AgGaSe{sub 2} 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 CO{sub 2} lasers to conversion in AgGaSe{sub 2} 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).
- OSTI ID:
- 22760213
- Journal Information:
- Physics of Atomic Nuclei, Vol. 80, Issue 11; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
- Country of Publication:
- United States
- Language:
- English
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