Abstract

The temperature and pump power dependence of infrared luminescence of Cr4+:forsterite are measured. It is demonstrated that temperature-dependent fluorescence in Cr4+:forsterite is the major reason for saturation of the output power of a continuous-wave laser. At higher pump intensities the temperature rise inside the crystal becomes significant, and even outside cooling does not help to prevent significant reduction of the laser performance. These measurements serve as a guideline to construct a high-power continuous-wave Cr4+:forsterite laser.

© 2001 Optical Society of America

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