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本文从理论上分析了准三能级系统 946nmNd :YAG固体激光器室温运转的条件及实现方法 ,并给出腔内倍频获得 473nm蓝光发射的方案。用波长 80 8 5nm ,功率 2W的半导体激光器泵浦Nd:YAG ,采用腔内插入高损耗元件选模的方法 ,在室温下获得 946nm波长连续红外激光输出1 80mW ,斜效率 1 3 % ;用BBO和LBO晶体腔内倍频 ,获得 473nm波长连续蓝色激光 ,输出功率分别 1 2mW和 50mW ,斜效率分别为 3 %及 1 0 %。
In this paper, the conditions of the quasi-three-level system 946nmNd: YAG solid state laser operating at room temperature and its implementation are theoretically analyzed. The scheme of obtaining 473nm blue light emission with double frequency in the cavity is given. Nd: YAG was pumped by a semiconductor laser with a wavelength of 80 8 5nm and a power of 2W. A cavity-inserted high-loss element mode selection method was used to obtain a continuous-wave infrared laser output of 946nm with a wavelength of 946nm at 180mW and a slope efficiency of 13% at room temperature. And LBO crystal frequency doubling to obtain a continuous blue laser wavelength of 473nm, the output power of 12mW and 50mW, respectively, the ramp efficiency of 3% and 10%.