Frequency conversion of mode-locked and Q-switched CO laser radiation with efficiency up to 37

Frequency conversion of CO laser radiation was experimentally studied in ZnGeP(2) and GaSe nonlinear crystals. To enhance conversion efficiency, we applied a CO laser system "master oscillator power amplifier" with concurrent mode locking and Q switching. The laser system emitted ∼1-μs tra...

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Published in:Optics letters 2015-07, Vol.40 (13), p.2997-3000
Main Authors: Andreev, Yu M, Budilova, O V, Ionin, A A, Kinyaevskiy, I O, Klimachev, Yu M, Kotkov, A A, Kozlov, A Yu
Format: Article
Language:English
Subjects:
Conversion
Crystals
Efficiency
Energy conversion efficiency
Frequency doubling
Lasers
Optical pumping
Oscillators
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description Frequency conversion of CO laser radiation was experimentally studied in ZnGeP(2) and GaSe nonlinear crystals. To enhance conversion efficiency, we applied a CO laser system "master oscillator power amplifier" with concurrent mode locking and Q switching. The laser system emitted ∼1-μs train of ns pulses. Internal efficiency of frequency doubling reached 37% in ZnGeP(2) crystal and 5% in GaSe crystal. Two-stage frequency conversion (including second-harmonic and difference-frequency generation) in ZnGeP(2) crystal under optical pumping by a selective two-spectral line CO laser was studied.
doi_str_mv 10.1364/OL.40.002997
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subjects Conversion
Crystals
Efficiency
Energy conversion efficiency
Frequency doubling
Lasers
Optical pumping
Oscillators
title Frequency conversion of mode-locked and Q-switched CO laser radiation with efficiency up to 37
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