Alexandrite-laser performance at high temperature

Abstract

The performance of a flash-pumped alexandrite laser operating in a long-pulse mode has been characterized at temperatures from 34 to 310°C. Laser gain and efficiency increased monotonically up to 225°C, with a peak pulse energy there more than four times the value at 34°C. The output wavelength also increased monotonically from the 34°C value of 752 nm to a maximum of 790 am at 310°C.