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GeS2–Ga2S3–PbCl2玻璃的三阶非线性光学特性

ISSN号：0454-5648
期刊名称：《硅酸盐学报》
时间：0
分类：TQ171[化学工程—玻璃工业;化学工程—硅酸盐工业]
作者机构：[1]宁波大学信息科学与工程学院,浙江宁波315211
相关基金：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

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]

关键词：硫系玻璃, 三阶非线性光学效应, Z扫描, chalcohalide glass, third order nonlinear, Z-scan

中文摘要：

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 m^2/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。

英文摘要：

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.

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