无温控多波长LD泵浦方棒状Nd:YAG固体激光器

No-temperature-controlled multi-wavelength LD pumped square rod-shaped Nd:YAG solid-state laser

报道了一种多波长LD泵浦方棒状Nd∶YAG无温控固体激光器。激光器采用LD侧面泵浦方式,LD泵浦模块由四种不同中心波长的LD组合而成,常温25℃时,各bar条中心波长分别为802 nm、804 nm、806 nm、808 nm,LD模块光谱半高全宽为7 nm左右;工作介质为侧面双通方棒状Nd∶YAG键合晶体,通过控制光路可以增加工作介质的有效吸收长度;调Q方式为电光调Q;得到一种无温控固体激光器。该激光器在-40^+60℃温度范围内,可以无温控稳定输出能量≥40 mJ;输出激光水平方向发散角θ2 x=1.79 mrad,垂直方向发散角θ2 y=1.36 mrad;光束质量:M 2 x=4.858,M 2 y=2.697。

A multi-wavelength LD pumped square rod-shaped Nd∶YAG temperature-free solid-state laser is reported in this paper.The laser adopts LD side pumping mode,and the LD pumping module is composed of four LDs with different center wavelengths.At 25℃,the center wavelength of each bar is 802nm,804nm,806nm,808nm,and the full width at half maximum of the LD module is about 7 nm.The working medium is a side double-sided square rod-shaped Nd∶YAG bonded crystal,and the effective absorption length of the working medium can be increased by controlling the optical path;the Q-switching mode is electro-optic Q-switching;and a temperature-free solid-state laser is obtained.The laser can be temperature-free and stable output energy≥40 mJ in the temperature range of-40^+60℃.The horizontal divergence angle of the output laser is 1.79 mrad,and the vertical divergence angle is 1.36 mrad,the beam quality:M 2 x=4.858,M 2 y=2.697.