大口径光束高效三倍频理论和实验研究  

Theoretical and experimental study of high efficiency frequency tripling using large-aperture laser beam

作　　者：丘志仁 蔡希洁 郎家俊 黄奎喜[1] 葛夏平[1] 林康春 李戈平 

机构地区：[1]中国科学院上海光学精密机械研究所 [2]长春光学精密机械学院87届

出　　处：《光学学报》1990年第12期1086-1090,共5页Acta Optica Sinica

摘　　要：根据三颗耦合波方程,研究了基波与谱波能量比,晶体长度、功率密度、角失配量和匹配类型等诸因素对三倍频最大可获转换效率的影响.大口径光束三倍频实验结果与理论计算相一致.用类型IIKDP晶体三倍频,在中等功率密度下,获得了43%的能量转换效率.On the base of three-wave interaction equations, the dependences of the maximum attainable tripling efficiency on the energy ratio of the fundamental wave to the second harmonic wave, crystal length, power density, input beam divergence and match-type are given. The experimental results of frequency tripling are in agreement with theoretical calculations. With type-II KDP used in tripling, energy conversion efficiency as high as 43% has been obtained for moderate power levels.

关 键 词：光束 三倍频 转换效率 

分 类 号：O437[机械工程—光学工程]