High-efficiency high-average-power second-harmonic generation with CdGeAs2

1 October 1976

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 29 (7) , 422-424
https://doi.org/10.1063/1.89104

Abstract

Average second‐harmonic power at 5.3 μm exceeding 0.75 W with a 17% power conversion efficiency has been obtained by pumping a CdGeAs₂ crystal, cooled to near 77 K, with a Q‐switched CO₂ laser. Average and peak conversion efficiencies of 21 and 30%, respectively, were achieved at a pulse rate of 1.5 kHz. In cw operation the crystal gave a second‐harmonic output of 73 mW with a conversion efficiency near 0.5%.

Keywords

This publication has 4 references indexed in Scilit:

Saturation in generation of second harmonic of TEA CO₂laser radiation in proustite
Soviet Journal of Quantum Electronics, 1975
Efficient doubling and CW difference frequency mixing in the infrared using the chalcopyrite CdGeAs2
Optics Communications, 1974
REDUCTION IN SHG EFFICIENCY IN TELLURIUM BY PHOTOINDUCED CARRIERS
Applied Physics Letters, 1970
Q-switching of the CO2laser
IEEE Journal of Quantum Electronics, 1968