Spectral characteristics of multi-line Q-switched CO laser radiation frequency converted in ZnGeP2

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作者：
A. A. Ionin
I. O. Kinyaevskiy
Yu. M. Klimachev
D. S. Kryuchkov
A. M. Sagitova
E. S. Sunchugasheva
机构：
[1] Russian Academy of Sciences,P.N. Lebedev Physical Institute
[2] National Research Nuclear University MEPhI,undefined
[3] Moscow Institute of Physics and Technology,undefined
来源：
Applied Physics B | 2017年 / 123卷
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摘要：
Lasing on different spectral lines belonging to a giant pulse of multi-line Q-switched CO laser was experimentally studied. The Q-switched CO laser emitted a giant microsecond pulse that consisted of about one hundred subpulses corresponding to different rotational–vibrational transitions. Amplitude, time delay and duration were measured for such a laser subpulse, and processes affecting formation of the CO laser giant pulse spectrum were analyzed. These data were taken into account to correctly estimate peak power and the number of spectral lines of radiation formed under sum frequency conversion of the CO laser radiation in nonlinear ZnGeP2 crystal.
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