Cascaded second-harmonic and sum-frequency generation of a CO2 laser by use of a single quasi-phase-matched GaAs crystal
Optics Letters, Vol. 23, Issue 19, pp. 1508-1510 (1998)
http://dx.doi.org/10.1364/OL.23.001508
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Abstract
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/cm2 , in fair agreement with theoretical predictions.
© 1998 Optical Society of America
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OCIS Codes
(140.1340) Lasers and laser optics : Atomic gas lasers
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(190.0190) Nonlinear optics : Nonlinear optics
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
(190.7220) Nonlinear optics : Upconversion
Citation
L. Becouarn, E. Lallier, M. Brevignon, and J. Lehoux, "Cascaded second-harmonic and sum-frequency generation of a CO2 laser by use of a single quasi-phase-matched GaAs crystal," Opt. Lett. 23, 1508-1510 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-19-1508
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