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GeS2-Ga2S3-AgCl微晶玻璃的制备及其光学性质

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：国家自然科学基金（60878042和60978058）; 浙江省自然基金（Y1090996）; 宁波创新团队（2009B21007）; 宁波大学王宽诚幸福基金资助项目

作者：沈祥[1], 范鑫烨[1], 陈飞飞[1], 戴世勋[1], 王训四[1], 徐铁峰[1], 聂秋华[1]

关键词：硫卤微晶玻璃, 三阶光学非线性, Z扫描, chalcohalide glass ceramic, third-order nonlinearity, Z-scan

中文摘要：

用熔融淬冷法制备了一系列GeS2-Ga2S3-AgCl三元系统硫卤玻璃。研究了样品的密度、热稳定性以及折射率随玻璃组分的变化规律。选取了75GeS2-10Ga2S3-15AgCl玻璃组分进行微晶化处理,并且在350℃下热处理得到了可见至红外透明的微晶玻璃样品。X射线衍射和扫描电子显微镜测试显示,玻璃中析出（Ga4Ge）S4和AgCl微晶相,晶粒尺寸为200～400nm。用Z扫描测量了微晶化前后玻璃样品在800nm波长下的三阶非线性特性,结果表明：在热处理后,玻璃的非线性折射率n2和非线性吸收系数β均明显增加,其中微晶玻璃的最大三阶非线性极化率χ（3）为8.619×10-11esu,是基质玻璃的2.2倍。

英文摘要：

A series of chalcohalide glasses based on GeS2-Ga2S3-AgCl ternary system were prepared by melt-quench method,and their composition dependences on densities,thermal stabilities and linear refractive indexes were investigated. Glass in composition of 75GeS2-10Ga2S3-15AgCl （in mole） was selected for microcrystalline and visible/IR transparent glass ceramic samples were ob-tained by heat treating the host at 350 ℃ with different durations. X-ray diffraction and scanning electron microscope measurements confirm the formation of （Ga4Ge）S4 and AgCl phase with grain size of 200-400 nm in the heat-treated samples. Z-scan method was employed to investigate the third-order nonlinear optical characteristics of the samples at 800 nm. The results show that both nonlinear refractive index n2 and nonlinear absorption coefficient β of the glass increase after heat treatment,and the highest third-order nonlinear susceptibility χ（3） of the glass ceramics is 8.619 × 10-11esu which is 2.2 times larger than that of the host.

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