A Broadband Infrared Laser Source (2.5–17 μm) for Plasma Diagnostics

Journal Article · Fri Dec 15 04:00:00 EST 2017 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778817110072· OSTI ID:22760213

Ionin, A. A.; Kinyaevskii, I. O.; Kozlov, A. Yu.; Kotkov, A. A. ^[1]

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1. 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, Journal Name: Physics of Atomic Nuclei Journal Issue: 11 Vol. 80; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CARBON DIOXIDE
CARBON MONOXIDE
CONVERSION
CRYSTALS
GAS LASERS
HARMONICS
INFRARED SPECTRA
LASER RADIATION
MODE LOCKING
NONLINEAR PROBLEMS
PEAK LOAD
PLASMA DIAGNOSTICS