Abstract

A flashlamp pumped 2.70μm Cr:Er:yttrium scandium gallium garnet (YSGG) laser in a simple Fabry–Perot-type resonator has been developed. The emission wavelength of 2.70μm at the laser is easily selected by a specially designed resonator with a dichroic coated mirror. Maximum output energy of 88mJ with a slope efficiency of 0.167% has been achieved in the free-running regime. In the Q-switching regime using an IR-quartz shutter, a Q-switched pulse of 80ns, single-pulse energy of 30mJ, and a slope efficiency of 0.064% have been achieved in TEM00 mode. Good agreement between a proposed theoretical model and the experimental results is obtained. The optimal output on the 2.70μm emission Cr:Er:YSGG lasers is estimated by a theoretical simulation.

© 2008 Optical Society of America

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