石英声光开关  

Quartz Acoustooptic Switch

作　　者：曾庆高 张泽红[2] 高维松[2] 付礼鹏 ZENG Qinggao;ZHANG Zehong;GAO Weisong;FU Lipeng(The 44th Research Institute of China Electronics Technology Group Corporation,Chongqing 400060,China;The 26th Research Institute of China Electronics Technology Group Corporation,Chongqing 400060,China)

机构地区：[1]中国电子科技集团公司第四十四研究所,重庆400060 [2]中国电子科技集团公司第二十六研究所,重庆400060

出　　处：《压电与声光》2019年第2期188-191,共4页Piezoelectrics & Acoustooptics

摘　　要：该文介绍了一种用于高功率激光器的石英声光开关。该声光开关采用石英晶体作声光介质,铌酸锂晶体作换能器材料,工作波长为1 064 nm,工作频率为68 MHz,光孔径为SymbolFC@4 mm,通过优化设计声光互作用长度,使1级光衍射效率可达95%。该文还测量分析了衍射光的光束质量因子M^2,通过优选晶体材料,提高抛光质量,合理设计散热结构等措施,使衍射光较好地保持了入射光的光束模式。A quartz acousto-optic switch used for high-power laser is introduced in this paper.The acousto-optic switch uses quartz crystal as an acousto-optic medium,and lithium niobate crystal as transducer material.The working wavelength is 1 064 nm,working frequency is 68 MHz and diameter of the optical aperture is Ф4 mm.By optimizing the design of the acousto-optic interaction length,the first-order optical diffraction efficiency can reach 95%.This paper also analyzed and measured the beam quality factor M^2 of the diffracted light.By optimizing the crystal materials,improving the polishing quality,and rationally designing the heat dissipation structure,the diffraction light can preferably maintain the beam mode of the incident light.

关 键 词：声光开关 石英晶体 衍射效率 光束质量因子M^2 激光器 

分 类 号：TN248[电子电信—物理电子学] TN65