300 MHz、139 fs全光纤超短脉冲激光器  

300 MHz,139 fs All-fiber Ultra-short Pulse Laser

作　　者：黄玺玮 李晓辉[1] 郭潇潇 唐旭 张锐 HUANG Xiwei;LI Xiaohui;GUO Xiaoxiao;TANG Xu;ZHANG Rui(School of Physics and Information Technology,Shaanxi Normal University,Xi’an 710062,China)

机构地区：[1]陕西师范大学物理学与信息技术学院,陕西西安710062

出　　处：《聊城大学学报（自然科学版）》2024年第3期1-7,共7页Journal of Liaocheng University:Natural Science Edition

基　　金：陕西国际合作项目(2023-GHZD-46);中国科学院“西部之光”项目(XAB2022YW06);咸阳市重点研发计划(L2022-ZDYF-GY-028);陕西师范大学启动基金(1112010209,1110010717);陕西师范大学青年学术骨干项目(18QNGG006)资助。

摘　　要：高重复频率超短脉冲光纤激光器在高效加工、生物光学成像等方面具有广泛的应用价值。报道了基于非线性偏振演化效应的高重复频率、百飞秒、集成化光纤激光源。通过集成结构实现重频300.25 MHz、脉冲宽度139 fs的脉冲激光。在384.2 mW的平均泵浦功率下,该激光器连续工作12 h,光谱输出形状未发生变化。其中在6 h内,重复频率漂移量约为25 Hz。此外,该激光器在泵浦功率为512.8 mW时,可以实现自启动,因此,这种结构简单,高重复频率的超短脉冲锁模光纤激光器是一种具有广泛应用潜力的激光源。Ultra-short pulse fiber lasers with high repetition rate have been widely used in high efficiency processing and bio-optical imaging.In this paper,a high repetition rate,hundred-femtosecond,integrated fiber laser source based on nonlinear polarization evolution is reported.The integrated structure realizes the pulse laser with a repetition rate of 300.25 MHz and pulse duration of 139 fs.At an average pump power of 384.2 mW,the laser operated continuously for 12 hours,and the spectral output shape did not change.Within 6 hours,the repetition rate drift is about 25 Hz.In addition,the laser can be self-started when the pump power is 512.8 mW,so this kind of ultra-short pulse mode-locked fiber laser with simple structure and high repetition rate is a laser source with wide application potential.

关 键 词：高重复频率 超短脉冲 光学混合器 时间带宽积 自启动 

分 类 号：O437[机械工程—光学工程]