Sum frequency generation under conversion of Q-switched cryogenic slab RF discharge CO laser radiation in ZnGeP2

For the first time broadband sum frequency generation in ZnGeP2 crystal has been accomplished with a compact cryogenic slab RF discharge CO laser. The spectrum of the CO laser operating in a repetitively pulsed multiline Q-switching mode consisted of ~90 emission lines in the wavelength range of 4.9...

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Bibliographic Details
Published in:Laser physics 2018-02, Vol.28 (2)
Main Authors: Ionin, A A, Kinyaevskiy, I O, Klimachev, Yu M, Kochetkov, Yu V, Kozlov, A Yu, Seleznev, L V, Sinitsyn, D V, Zemtsov, D S, Andreev, Yu M
Format: Article
Language:English
Subjects:
CO laser
mid-IR
nonlinear crystal
Q-switching
slab RF discharge
sum frequency generation
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Summary:For the first time broadband sum frequency generation in ZnGeP2 crystal has been accomplished with a compact cryogenic slab RF discharge CO laser. The spectrum of the CO laser operating in a repetitively pulsed multiline Q-switching mode consisted of ~90 emission lines in the wavelength range of 4.95-6.60 µm. Internal sum frequency generation efficiency was reached up to 8.2%. The resulted spectrum contained ~200 spectral lines in the wavelength range of 2.5-3.2 µm.
ISSN:1054-660X
1555-6611
DOI:10.1088/1555-6611/aa981d