1.7μm自同步皮秒脉冲随机拉曼光纤激光器  

1.7μm self-synchronized picosecond pulsed random Raman fiber laser

作　　者：朱逸怀 沈鹏生 郑树锴 於林鹏 罗兴 王金章[1] 闫培光[1] 吕启涛 董繁龙 郭春雨[1] 阮双琛[1,2] ZHU Yihuai;SHEN Pengsheng;ZHENG Shukai;YU Lingpeng;LUO Xing;WANG Jinzhang;YAN Peiguang;LÜQitao;DONG Fanlong;GUO Chunyu;RUAN Shuangchen(College of Physics and Optoelectronic Engineering,Shenzhen Key Laboratory of Laser Engineering,Shenzhen University,Shenzhen 518060,Guangdong Province,P.R.China;Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes,Shenzhen Technology University,Shenzhen 518118,Guangdong Province,P.R.China;Han's Laser Technology Industry Group Co.Ltd.,Shenzhen 518057,Guangdong Province,P.R.China)

机构地区：[1]深圳大学物理与光电工程学院,深圳市激光工程重点实验室,广东深圳518060 [2]深圳技术大学先进光学精密制造技术广东普通高校重点实验室,广东深圳518118 [3]大族激光科技产业集团股份有限公司,广东深圳518057

出　　处：《深圳大学学报（理工版）》2022年第4期363-368,共6页Journal of Shenzhen University(Science and Engineering)

基　　金：国家自然科学基金资助项目(61975136,61935014,62105222,61775146,61905151);广东省基础与应用基础研究基金资助项目(2019A1515010699);深圳市基础研究计划资助项目(JCYJ20210324094400001,CJGJZD20200617103003009)。

摘　　要：针对目前1.7μm波段短脉冲激光器普遍存在的结构复杂问题,提出并实现了一种全光纤化自同步皮秒脉冲随机拉曼激光器.采用1578 nm脉冲光纤激光器泵浦基于随机分布反馈的半开拉曼腔,实现了中心波长1695 nm,平均功率224 mW的皮秒脉冲输出.激光器无需精确匹配腔长或复杂的反馈控制,分布式瑞利散射形成的复合腔自动满足同步泵浦条件.通过在腔内插入波分复用器,抑制了随机子腔噪声,进一步提高输出脉冲的稳定性.本研究首次实现了工作在1.7μm波段的随机脉冲光纤激光器,可广泛应用于生物成像和材料加工等领域.Aiming at the structural complexity of the current 1.7μm band short pulse lasers,we propose and implement a self-synchronized picosecond pulsed random Raman fiber laser.The half-open Raman cavity based on random distributed feedback is pumped by a 1578 nm pulsed fiber laser to achieve a picosecond pulse output with a central wavelength of 1695 nm and an average power of 224 mW.The composite cavity formed by distributed Rayleigh scattering automatically satisfies the synchronous pumping condition without the need for precise matching of cavity length or complex feedback control in the system.By inserting a wavelength division multiplexer in the cavity,the random sub-cavity noise is suppressed and the stability of the output pulse is improved.To the best of our knowledge,this is the first realization of a random pulse fiber laser operating at 1.7μm,which can be widely used in bioimaging and material processing.

关 键 词：光电子与激光技术 非线性光学 随机光纤激光器 拉曼光纤激光器 同步泵浦 脉冲 

分 类 号：TN248[电子电信—物理电子学] O437[机械工程—光学工程]