GeS_2–Ga_2S_3–PbCl_2玻璃的三阶非线性光学特性  

Third Order Nonlinear Optical Properties of GeS_2–Ga_2S_3–PbCl_2 Glass

作　　者：吕馨[1] 聂秋华[1] 徐铁峰[1] 戴世勋[1] 沈祥[1] 王训四[1] 陈飞飞[1] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211

出　　处：《硅酸盐学报》2011年第1期120-124,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然基金项目(60878042;60978058);中国博士后基金(20080430204);浙江省自然基金项目(Y407253;Y1090996);中科院和宁波大学王宽诚幸福基金资助

摘　　要：采用熔融–淬冷法制备了(100–x)(0.8GeS2–0.2Ga2S3)–xPbCl2(x=0,5,10,15,摩尔分数)系列硫卤玻璃,测试了样品的密度、可见–中远红外的透过性以及样品的折射率,并且根据Z扫描测试原理测试了飞秒脉冲下,样品在800 nm波长下的三阶非线性光学特性。结果表明:非线性折射率n2和非线性吸收系数β均随着PbCl2含量的增加而增大,特别是x=15的样品的非线性折射率n2=2.812×10–17 m2/W,非线性吸收系数β=4.298×10–11m/W,较传统无重金属参杂硫系玻璃的三阶非线性性能明显提高。A series of（100–x）（0.8GeS2–0.2Ga2S3）–xPbCl2（x = 0,5,10,15,mole fraction） chalcogenide glasses were prepared by conventional melt-quenching method.The physical and optical properties（densities,refractive indices,absorption spectra and trans-mission spectra） were determined.The Z-scan technique was carried out to investigate the third-order nonlinear optical properties of the samples at 800 nm.The effect of PbCl2 content on the linear refractive index,transmission property,and third-order nonlinear property of samples was also investigated.The results show that the linear refractive index nonlinear refractive index n2,nonlinear absorption coefficient β and third-order nonlinear optical susceptibility of samples increases with PbCl2 content.The values of n2 and β with the content of 15% PbCl2 are equal to n2=2.812×10^–17 m^2/W and β = 4.298 × 10^–11 m/W,respectively,which is much better than the chalcogenide glass without the heavy metal doped.

关 键 词：硫系玻璃 三阶非线性光学效应 Z扫描 

分 类 号：TQ171[化学工程—玻璃工业]