Cascaded second-harmonic and sum-frequency generation of a CO2 laser by use of a single quasi-phase-matched GaAs crystal

被引：25

作者：

Becouarn, L ^{[1
]}

Lallier, E ^{[1
]}

Brevignon, M ^{[1
]}

Lehoux, J ^{[1
]}

机构：

[1] Thomson CSF, Cent Rech Lab, F-91404 Orsay, France

来源：

OPTICS LETTERS | 1998年 / 23卷 / 19期

关键词：

D O I：

10.1364/OL.23.001508

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Cascaded second-harmonic and sum-frequency generation were used to obtain the third harmonic of a CO2 laser in a single quasi-phase-matched GaAs crystal. Both continuous-wave and pulsed regimes with a single-pass configuration were studied. The continuous case confirmed the good capability of the GaAs stack to bear high average power density. In the pulsed regime a 0.66% peak power conversion efficiency was achieved for the third harmonic when the laser was pumping at 8.2 MW/cm(2), in fair agreement with theoretical predictions. (C) 1998 Optical Society of America.

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页码：1508 / 1510

页数：3

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