1319nm与660nm双波长Nd:YAG激光器的研究

Study on CW Nd:YAG Laser at 1 319 nm and 660 nm

为研究获得高功率红光的有效方法,研制了一种准连续输出1319nm与660nm双波长Nd:YAG激光器.文中分析了波长1319nm激光的辐射跃迁能级,论述了抑制1064nm激光的生成从而提高1319nm激光输出等关键技术,研究了光学镜片的镀膜参数与腔型结构,实现1319nm激光连续输出最高功率43W,以1319nm激光为基频,置入KTP晶体内腔倍频,并设置声光Q开关,获得660nm红光准连续输出2W,实现1319nm与660nm双波长输出.

A dual-wave Quasi-CW Nd:YAG laser has been demonstrated at the wavelengths of 1 319 nm and 660 nm. The transition radiation energy level of the 1 319 nm was analyzed. The critical technology of restraining resonance of 1 064 nm so as to improve that of 1 319 nm was discussed. Sophisticated optical coating and cavity structure was studied. Thus, a maximum continuous wave(CW) output power of 43 W at 1 319 nm was acquired. Based on the 1 319 nm laser, an intracavity frequency-doubling laser of 660 nm was also demonstrated by using KTP crystal and an acousto-optically Q-switch. A Quasi-CW red light output power of 2 W at 660 nm was acquired, and accordingly, dual-wave output was realized.