Abstract

A detailed investigation of frequency doubling of a transversely excited atmospheric CO₂ laser operating at 9.55 µm with a CdGeAs₂ crystal was carried out. The temperature of the crystal was varied between 80 and 295 K to maximize the frequency-doubled energy. The temporal shape of the generated beam at 4.775 µm was monitored to calculate its peak power. High values of midwave infrared pulse energy (16.65 mJ) and peak power (92 kW) were obtained, which can be of potential use in lidar systems.

© 2002 Optical Society of America

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