强激光与粒子束2024，Vol.36Issue(12)：4-10,7.DOI:10.11884/HPLPB202436.240230
γ辐照对窄线宽光纤激光器的影响及光漂白效果
Influence of γ-radiation on the output properties of narrow linewidth fiber laser and photo bleaching effect
摘要
Abstract
The radiation experiment on the seed stage of narrow line-width fiber lasers by γ ray radiation with total dose of 50 krad(Si)is conducted.The output properties of this seed laser are analyzed before and after γ radiation.Experimental results reveal that the output power declines over 70%,and the temperature of gain fiber rises significantly as the loss increases.The radiated seed source is amplified to kW power level,presenting little change of output power,central wavelength,and 3 dB bandwidth at different radiation dose.However,the SRS suppression slightly decreased with the increase of radiation dose.793 nm and 524 nm LDs with the same power are applied as bleaching sources of radiated seed stage,and the bleaching effect is analyzed.Due to higher photon energy and closer to the absorption peak of radiation-induced defects,524 nm LD presents a better bleaching effect.The output power of seed stage and 793 nm bleaching duration presents a linear relationship with a bleaching speed at 0.30 W/h,and the output power and 524 nm bleaching duration approximately presents a tensile-exponential function relationship with a bleaching speed at 1.65 W/h.关键词
光纤激光器/γ辐照/色心/光漂白Key words
Yb-doped fiber laser/γ radiation/color center/photo bleaching分类
信息技术与安全科学引用本文复制引用
郑也,孙仕豪,王学锋,于淼,李思源,王军龙..γ辐照对窄线宽光纤激光器的影响及光漂白效果[J].强激光与粒子束,2024,36(12):4-10,7.基金项目
国家自然科学基金企业创新发展联合基金项目(U20B2058),中国航天科技集团有限公司 2022 年度自主研发项目 （U20B2058）
