摘要
用Ｆｏｘ－Ｌｉ迭代法研究了激光谐振腔镜面变形对激光振荡模式的影响，给出了几种镜面变形条件下的激光谐振腔自再现模，即镜面上光场振幅和位相分布的模拟结果。对平凹稳定腔，为获得严格的基模激光振荡，应将这种镜面变形控制在１／２０波长范围内；若镜面变形超过１／１０波长，则该谐振腔不存在严格的基模自再现模。同时，高功率激光腔镜的边缘冷却方式将造成较大的镜面形状变化，从而影响激光光束质量。
The modes of stable resonator which consist of thermal distorted flat and concave mirror are investigated with Fox Li iteration.The amplitude and phase distributions on the output mirror are presented.For this stable resonator,in order to erase the modes distribution,the thermal distortion of both mirrors should be less than 1/20 wavelength.If the mirror distortion is greater than 1/10 wavelength,there would be no fundamental mode.It is also pointed out that there are more serious mirror thermal distortion in fringe cooling mirror in high power laser and then the laser beam quality is lowered badly.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
1997年第3期447-450,共4页
High Power Laser and Particle Beams
基金
国家863激光技术领域资助
