LD泵浦NYAB自倍频激光器和双波长激光器

A experimental study on NYAB self-doubling laser pumped by laser diode

研制出国内第一台用ＬＤ泵浦的ＮＹＡＢ自倍频激光器和双波长激光器。采用直接耦合方式进行端面泵浦。自倍频激光器产生 ０．５３１ μｍ的绿色激光，基横模运转，阈值泵浦功率为 １４．３１ ｍＷ，输出功率达 ２．２ ｍＷ，斜效率达 ２．１％。双波长激光器同时产生 ０．５３１ μｍ的绿色激光和 １．０６２ μｍ的近红外激光，基横模运转，阈值泵浦功率为１４．８１ ｍＷ，输出功率达 ９．２ ｍＷ，斜效率达 ７％。

A LD pumped NYAB self-doubling laser and a LD pumped NYAB double wavelength laser are developed. The pumping laser beams of LD are directly focused into the NYAB lasers with a focus system. For the fundamental transverse mode operation, the self-doubling laser generates 2. 2 mW output power at 0. 531 μm with threshold pumping power of 14.31 mW, and its slope efficiency is 2. 1%, the double wavelength laser generates 9.2 mW outout power at 0.531 μm and 1.062 μm with threshold pumping power of 14 .81 mW, and its slope efficiency is 7%.