【摘要】 非稳腔能产生大体积基模,具有好的空间选模特性,但在固体调Q激光器中,由于孔径光阑和热畸变的影响,非稳腔输出的横模并不光滑。使用高斯反射率耦合输出镜可较好地改善其输出光束质量,设计了平-凸非稳腔,使用Nd:YAG,电光调Q固体激光器进行实验,获得了较为平滑的远场光强分布,实验结果表明高斯反射率输出镜可较好地改善固体激光器中非稳腔输出光束质量。更多还原

【Abstract】 Unstable resonator can produce large volum of basic mode and has satisfactory space mode. But in solid Q setting laser, its output transverse mode is not smooth beause of the aperture diaphragm and heat deformation. The output beam quality can be improved by adopting Gaussian reflectivity coupling output mirror, using plano-convex unstable cacity, Nd: YAG, and electro-optic Q setting solid laser in the experiment. We achieved satisfactorily smooth distribution of far-field light intensity. Experiment result indicates that Gaussian reflectivity output mirror can improve the output beam quality of unstable cavity in solid laser.更多还原