Abstract Optical pumping of solid-state lasers induces a thermal lens effect in the laser crystal; this thermal effect determines the beam properties. In this paper, the focal length of the thermal lens is calculated, and resonator parameter ($g_1 g_2$) is obtained, which is insensitive to thermal distortions when the product of the resonator parameters ($g_1, g_2$) equals 1/2. By using our calculated results, we get the fundamental transverse mode laser output with optic－optic conversion of 48.6%, and slope efficiency of 56.3%.
Received: 03 November 2003
Revised: 24 December 2003
Accepted manuscript online:
PACS:
42.55.Rz
(Doped-insulator lasers and other solid state lasers)
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