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长腔被动锁模掺镱光纤激光器的方波脉冲产生

Generation of Square Pulses in Passively Mode-Locked Ytterbium-Doped Fiber Laser with Long Cavity

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摘要

报道了一种基于非线性光纤环形镜(NOLM)、工作在耗散孤子共振(DSR)区的长腔被动锁模掺镱光纤激光器,该激光器谐振腔的总长度约为1502 m,可以输出重复频率为133。18 kHz的高能量方波脉冲,且输出脉冲的宽度和单脉冲能量均随泵浦功率的增大而呈线性增大。当泵浦功率增大到414。47 mW时,输出的方波脉冲具有最大宽度(761。6 ns),同时单脉冲能量达到了最大值(60。2 nJ)。通过改变NOLM中单模光纤的长度,进一步研究了谐振腔长度对输出方波脉冲特性的影响,结果表明:谐振腔越长,所得DSR方波脉冲越宽,脉冲峰值功率越低。

Abstract

This paper reports on a passively mode-locked ytterbium-doped fiber laser with a 1502-m total cavity length operating in the dissipative soliton resonance (DSR) region using the nonlinear optical loop mirror (NOLM) technique. High-energy square pulses with an ultra-low repetition rate of 133.18 kHz are observed. Both the duration and single pulse energy of the output DSR pulse increase linearly with increasing pump power. The maximum output pulse duration reaches 761.6 ns at a pump power of 414.47 mW, while the single pulse energy at the same power level reaches 60.2 nJ. In addition, the influence of cavity length on the pulse duration and single pulse energy is investigated by changing the length of the single mode fiber in the NOLM. The results indicate that the longer the cavity length is, the larger the pulse duration is, and the lower the peak power is.

补充资料

中图分类号:O436

DOI:

所属栏目:激光器件与激光物理

基金项目:国家自然科学基金;

收稿日期:2019-07-15

修改稿日期:2019-09-26

网络出版日期:2020-01-01

作者单位    点击查看

孙旭:天津大学精密仪器与光电子工程学院光纤光学及光通信实验室, 天津 300072
贾东方:天津大学精密仪器与光电子工程学院光纤光学及光通信实验室, 天津 300072
李梓豪:天津大学精密仪器与光电子工程学院光纤光学及光通信实验室, 天津 300072
葛春风:天津大学精密仪器与光电子工程学院光纤光学及光通信实验室, 天津 300072
王肇颖:天津大学精密仪器与光电子工程学院光纤光学及光通信实验室, 天津 300072
杨天新:天津大学精密仪器与光电子工程学院光纤光学及光通信实验室, 天津 300072
曹晓冬:天津光电集团有限公司, 天津 300384
张鹏泉:天津光电集团有限公司, 天津 300384

联系人作者:贾东方(jiadf@tju.edu.cn)

备注:国家自然科学基金;

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引用该论文

Sun Xu,Jia Dongfang,Li Zihao,Ge Chunfeng,Wang Zhaoying,Yang Tianxin,Cao Xiaodong,Zhang Pengquan。 Generation of Square Pulses in Passively Mode-Locked Ytterbium-Doped Fiber Laser with Long Cavity[J]。 Chinese Journal of Lasers, 2020, 47(1): 0101003

孙旭,贾东方,李梓豪,葛春风,王肇颖,杨天新,曹晓冬,张鹏泉。 长腔被动锁模掺镱光纤激光器的方波脉冲产生[J]。 中国激光, 2020, 47(1): 0101003

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