As_2S_3玻璃的二阶非线性光学效应研究  

Study on the Second-order Optical Nonlinearity of As_2S_3 Glass

作　　者：郑小林[1] 周学东[1] 赵修建[1] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,武汉430070

出　　处：《武汉理工大学学报》2011年第3期6-9,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(5103200560808024);教育部留学回国人员科研启动基金(教外司留[2010]1174号)

摘　　要：用传统的熔融冷却法制备了适用于光纤拉制的As2S3玻璃,研究了其透过率、热学属性、拉曼特性和二阶非线性光学性能及其稳定性。结果表明,对As2S3玻璃进行热-电场极化处理后,可以观察到明显的二次谐波发生信号,但是其稳定性较弱。拉曼分析表明样品在极化前后无明显结构变化。在5 kV、100℃对样品极化处理40 min后可获得最强的二阶非线性极化率值为0.38 pm/V。通过引入微量Na+后,可明显增强二次谐波发生信号的稳定性,这将有利于其在红外光电器件中的实际应用。As2S3 glasses that suit for the fabrication of fibers were prepared by the conventional melt-quenching technique.Their transmissivity,thermal properties,Raman spectra,second-order optical nonlinearity and stability were studied.The results indicate that second harmonic generation（SHG） could be induced in As2S3 glass after thermal-electric poling,but the stability of SHG was weak.Raman analysis indicates that no obvious structural changes have been induced in sample after poling.A largest second-order nonlinear susceptibility of 0.38 pm/V could be obtained in the samples after poling at 5 kV、100 ℃ for 40 min.With the addition of Na＋,the stability of SHG can be enhanced obviously,this will be beneficial for the real application of As2S3 glasses in the infrared optoelectronic devices.

关 键 词：As2S3玻璃 二阶非线性光学效应 热-电场极化 稳定性 

分 类 号：O437[机械工程—光学工程]