受激布里渊散射自调Q产生高功率白光超连续谱  

Stimulated Brillouin scattering self Q-switching generates high-power white light supercontinuum spectrum

作　　者：薛闯 李庆轩 张文启 赵观瑞 李官政 贾若愚 葛廷武[1] XUE Chuang;LI Qingxuan;ZHANG Wenqi;ZHAO Guanrui;LI Guanzheng;JIA Ruoyu;GE Tingwu(School of Physics and Optoelectronic Engineering,Beijing University of Technology,Beijing 100124,China;School of Noncommissioned Officers,Army Academy of Armored Forces,Changchun 130117,China)

机构地区：[1]北京工业大学物理与光电工程学院,北京100124 [2]陆军装甲兵学院士官学校,吉林长春130117

出　　处：《光学精密工程》2025年第1期50-56,共7页Optics and Precision Engineering

基　　金：光电对抗测试评估技术重点实验室开放课题项目(No.43101003202001)。

摘　　要：为了获得光谱更宽、功率更高以及结构简单的白光超连续谱输出,通过光纤中的受激布里渊散射(SBS)和瑞利散射(RS)机制,探索了自调Q技术在产生高功率白光超连续谱中的应用。通过实验构建了一个半开腔结构,利用掺镱光纤、光子晶体光纤和高反射率光栅,无外部脉冲调制的条件下,当泵浦功率达到97.4 W时,成功获得了光谱覆盖410~1700 nm、输出功率为24 W、重复频率为188.7 kHz的高功率白光超连续谱。该白光输出的光-光转换效率为24.6%。实验结果表明,基于SBS自调Q机制的白光超连续谱光纤激光器作为一种新型光源,具有结构简单、光谱范围广、平坦度较好等优点,为高功率白光超连续谱光源的研发提供了新方案。To generate a broader spectrum,higher power,and a more streamlined white light supercontin-uum output,this research investigates the application of self Q-switching technology in producing high-power white light supercontinuum through stimulated Brillouin scattering(SBS)and Rayleigh scattering(RS)mechanisms in optical fibers.The experimental setup employed a semi-open cavity structure com-prising ytterbium-doped fiber,photonic crystal fiber,and high-reflectivity grating.Without external pulse modulation,the study successfully achieved a high-power white light supercontinuum spectrum spanning 410-1700 nm,with an output power of 24 W and a repetition frequency of 188.7 kHz at a pump power of 97.4 W.The light-to-light conversion efficiency reached 24.6%.These findings demonstrate that the white light supercontinuum fiber laser based on the SBS self Q-switching mechanism represents a novel light source with significant advantages,including a simplified structure,extensive spectral range,and su-perior spectral uniformity.The research provides an innovative design approach for developing high-power white light supercontinuum spectral light sources.

关 键 词：光纤激光器 白光超连续谱 受激布里渊散射 被动调Q 

分 类 号：TN248[电子电信—物理电子学]