LD端面抽运的全固化单频蓝光激光器

All-solid-state Blue Laser of Single-frequency Operation End-Pumped by Diode Laser

用激光二极管(LD)抽运Nd:YAG晶体,采用四镜环行腔,腔内放置TGG晶体和λ/2波片,组成光学单向器,利用LBO晶体内腔倍频技术,实现单频946nm红外光和473nm蓝光输出。最大单频蓝光输出12mW,红外光输出13mW,光束x方向的M2为1.02,Y方向的M2为1.14。腰斑的不对称性为1.062。自由运转情况下,功率波动小于±1.5%,频率稳定性优于±5.4MHz。

A 946 nm Nd: YAG laser pumped by a laser diode was obtained using four mirrors ring resonator. the laser was single-frequency operated by using a TGG and a half-wave plate acted as optical diode in the cavity.when intracavity-frequency-doubled by a LBO crystal, 12 mw blue laser and 13 mw infrared laser can be obtained. M^2 of the laser beam is 1.02 in x direction and 1.14 in y direction and asymmetry is 1.062 only to the astigmation of the ring cavity. the intantly fluctution and frequency shift of the laser output are less than ±1.5% and better than ±5.4 MHz, respetively, when the laser is free running.