现代应用物理2026，Vol.17Issue(3)：21-27,7.DOI:10.12061/j.issn.2095-6223.202507018
掺镱光纤辐致损耗空间分布测量
Measurement of Radiation Induced Attenuation Distribution in Yb-Doped Fibers
摘要
Abstract
Yb-doped fiber(YDF)serves as the core gain medium for high-power lasers in the 1 μm waveband.However,in a gamma radiation environment,numerous color-center defects are readily generated inside the fiber,which induce radiation-induced attenuation and consequently degrade the performance of the fiber and laser system.This paper experimentally investigates the spatial distribution characteristics of radiation-induced attenuation in YDF and the corresponding measurement methods.Optical frequency domain reflectometry(OFDR)and the conventional transmission attenuation method were employed to quantitatively measure the radiation-induced attenuation of YDF at the 1.5 μm band under an irradiation dose of 600 Gy.Comparative analysis shows that the results obtained by the two methods are basically consistent,verifying the feasibility and reliability of OFDR in the quantitative measurement of fiber radiation-induced attenuation.To realize the rapid conversion of radiation-induced attenuation at different wavelength bands,a dual-band synchronous measurement scheme was designed,and the conversion coefficient of radiation-induced attenuation between the 1 μm and 1.5 μm wavebands was experimentally determined to be approximately 2.44.Finally,the spatial loss distribution of the fiber after irradiation and bleaching treatment was obtained via OFDR.It is confirmed that distinct spatial inhomogeneity still remains after bleaching phenomenon.关键词
辐致损耗/光频域反射技术/掺镱光纤/γ辐射Key words
radiation-induced attenuation/optical frequency domain reflectometry/Yb-doped fiber/gamma-ray radiation分类
信息技术与安全科学引用本文复制引用
王亚民,陶蒙蒙,王科,曹慧琳,谌鸿伟,叶景峰,沈炎龙,冯国斌..掺镱光纤辐致损耗空间分布测量[J].现代应用物理,2026,17(3):21-27,7.基金项目
国家自然科学基金资助项目(62274182,62475288) （62274182,62475288）
激光与物质相互作用全国重点实验室基金资助项目(SKLLIM2305) （SKLLIM2305）
