Temperature and light feedback instabilities of LD pumped Nd:KGW cw green laser

摘要

Influence of light feedback in laser diode end-pumped Nd$+3$PLU$/:KGd(WO$-4$/) laser with intracavity doubling as well as wavelength temperature variations of the pump source on stability of solid-state laser output power and efficiency have been investigated. Threshold and slope efficiency were measured under different output coupler transparencies and pumping beam waist sizes. Maximum output power of 130 mW for fundamental mode and 25 mW for SHG was obtained.