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Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China
In this paper we realized an efficient diode-pumped Nd-doped gadolinium gallium garnet (GGG) continuous-wave (CW) quasi-three-level laser operating at 937nm which is at the absorption peak of vapor. Laser actions of 0.5 at.% Nd-doped GGG crystals were also investigated. The maximum output power of 3 W was obtained at the incident pump power of 10.6 W with an optical to optical conversion efficiency of 29%. A maximum output power of 300 mW in the blue spectral range at 468 nm is achieved with 15-mm-long LBO.
Keywords:Absorption peak of vapor; all-solid-state; quasi-three-level; frequency doubling