高温度稳定性系列铌酸锂电光调Q开关的研制  

Development of Series Lithium Niobate Electro-optic Q-Switch with High Temperature Stability

作　　者：张玲[1,2] 韩文卿[1,2] 孙军[1,3] 王俊[1,2] 崔磊[1,2] 孔勇发[1,2] 刘士国[1] 黄自恒[1] 陈绍林[1] 许京军[1,2] 

机构地区：[1]南开大学弱光非线性光子学教育部重点实验室,天津300457 [2]南开大学泰达应用物理学院,天津300457 [3]南开大学现代应用技术研究院,天津300071

出　　处：《人工晶体学报》2010年第4期931-935,共5页Journal of Synthetic Crystals

基　　金：高等学校博士学科点专项科研基金资助课题(No.20090031120037)

摘　　要：通过对影响铌酸锂电光调Q开关工作温度稳定性的原因分析,认为晶体自身的应力是导致铌酸锂电光调Q开关温度稳定性差的主要原因。而减小晶体自身应力的关键主要取决于晶体光学质量的均匀性,同时,组分的波动也会使晶体产生应力。为此利用前期大尺寸铌酸锂晶体质量大幅提高的结果,配合适当的热处理工艺,研制出了系列铌酸锂调Q开关,通过在1064nm、1318nm、2128nm等激光器中应用,这些调Q开关均能稳定工作,完全能够满足激光雷达等脉冲激光器的使用。Different factors which affected the working temperature stability of LiNO3（ LN） Q-switch were analyzed. It is indicated that crystal＇ s own stress is the main reason for the weakness of temperature stability of LN Q-switches. Crystal＇s own stress depends largely on the crystal＇s optical quality uniformity. At the same time,the component uniformity of LN crystal is also a main factor that destroys the stability of Q-switch. Benefited from improvement of large size LN crystal inner quality and appropriate heat treatments,this work produced a series of LN Q-switches,and used well in 1064 nm,1318 nm,2128 nm lasers,the stability is appropriate for lidar＇ s pulse laser source.

关 键 词：Q开关 铌酸锂 温度稳定特性 

分 类 号：O79[理学—晶体学]