Ge-Sb-Se硫系玻璃光纤的CO<sub>2</sub>激光导能特性

严春阳; 吴丽华; 戴世勋; 张培晴; 刘自军; 王训四

doi:doi:10.3788/cjl201643.0803001

中国激光, 2016, 43 (8): 0803001, 网络出版: 2016-08-10

Ge-Sb-Se硫系玻璃光纤的CO₂激光导能特性下载： 804次

CO₂ Laser Power Delivery Characteristics of Ge-Sb-Se Glass Fibers

论文大纲

严春阳 ^1,2,*吴丽华 ^1,2戴世勋 ^1,2张培晴 ^1,2刘自军 ^1,2王训四 ^1,2

作者单位

¹ 宁波大学高等技术研究院红外材料及器件实验室, 浙江宁波 315211

² 浙江省红外探测材料及器件重点实验室, 浙江宁波 315211

材料 Ge-Sb-Se硫系玻璃光纤导能特性 CO2激光激光损伤 materials Ge-Sb-Se chalcogenide glass power delivery characteristics of fibers CO2 laser laser damage

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摘要

制备了低杂质吸收的Ge20Sb15Se65硫系玻璃并拉制了不同直径的光纤，进行了10.6 μm CO2激光导能实验。实验结果表明，制备的Ge20Sb15Se65硫系玻璃具有良好的抗析晶特性，在5~11 μm波段透过率约为64%。在高功率CO2激光作用下，Ge20Sb15Se65玻璃光纤端面会出现熔融损伤，原因在于光吸收产生的热堆积导致光纤端面温度快速升高。当光纤直径为800 μm、长度为430 mm、输入端功率为5267 mW时，输出功率最大，为809 mW，输出功率密度为161 W/cm2，传输效率为16%，实验结果与理论计算结果基本相符。

Abstract

Ge20Sb15Se65 chalcogenide glasses with low impurity absorption are prepared and fibers with different diameters are drawn. The power delivery characteristics of CO2 laser (10.6 μm) through these fibers are experimentally investigated. The experiment results show that the glass prepared has good anti-crystallization property, and the infrared transmission in the 5-11 μm band is about 64%. Under high power CO2, heat accumulation caused by the light absorption makes the temperature on the fiber end surface rise rapidly, and the melting damage is observed on the end surface of the Ge20Sb15Se65 glass fiber. The maximum output power of 809 mW with the input power of 5267 mW is obtained by using the fiber with a diameter of 800 μm. The output power density is 161 W/cm2 and the delivery efficiency is 16%. The experimental results are basically consistent with the theoretical calculation results.

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严春阳, 吴丽华, 戴世勋, 张培晴, 刘自军, 王训四. Ge-Sb-Se硫系玻璃光纤的CO₂激光导能特性[J]. 中国激光, 2016, 43(8): 0803001. Yan Chunyang, Wu Lihua, Dai Shixun, Zhang Peiqing, Liu Zijun, Wang Xunsi. CO₂ Laser Power Delivery Characteristics of Ge-Sb-Se Glass Fibers[J]. Chinese Journal of Lasers, 2016, 43(8): 0803001.

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