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全光纤偏振输出锁模光纤激光器

All-Fiber Based Mode-Locked Fiber Laser with Polarization Output

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摘要

提出了一种全光纤偏振输出锁模光纤激光器。在谐振腔内无滤波器件时, 利用光纤偏振分束器的偏振输出和光纤的双折射偏振滤波效应在全正色散域获得稳定的锁模脉冲序列, 脉冲重复频率为2.2 MHz, 单脉冲能量达100 nJ。利用级联偏振控制器调节腔内偏振状态, 获得了单波长和双波长锁模输出, 在1 μm波段观测到了稳定的暗孤子脉冲, 腔内偏振态的演变是获得不同锁模状态的关键性因素。双波长锁模输出状态下的波长可调谐宽度达12 nm, 利用系统透过率函数理论分析了利用腔内偏振调节实现波长调谐的原理。

Abstract

An all-fiber based polarization output mode-locked laser is proposed. Without a band-pass filter in the oscillator, stable mode-locked pulse train in the all-normal dispersion region is obtained when the polarization output of fiber polarization splitter and the birefringence filtering effect of fiber are used. The repetition rate of pulse is 2.2 MHz and the single pulse energy is 100 nJ. The single-wavelength and dual-wavelength mode-locked output are experimentally obtained when we adjust the intra-cavity polarization by an in-line polarization controller, and the stable dark soliton pulse is observed at 1 μm. The evolution of the intra-cavity polarization is the key to obtain different mode-locked states. Under the dual-wavelength mode-locked state, the wavelength tunable width can reach 12 nm. The system transmission function is used to theoretically analysis the principle of wavelength tuning based on intra-cavity polarization controlling.

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中图分类号:TN248.1;O437

DOI:10.3788/lop54.081404

所属栏目:激光器与激光光学

基金项目:国家自然科学基金(61575011)

收稿日期:2017-03-06

修改稿日期:2017-04-07

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董自凯:北京工业大学应用数理学院, 北京 100124
徐润亲:北京工业大学应用数理学院, 北京 100124
田金荣:北京工业大学应用数理学院, 北京 100124
宋晏蓉:北京工业大学应用数理学院, 北京 100124

联系人作者:董自凯(adongzikai7@126.com)

备注:董自凯(1990-), 男, 硕士研究生, 主要从事超快光纤激光器方面的研究。

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引用该论文

Dong Zikai,Xu Runqin,Tian Jinrong,Song Yanrong. All-Fiber Based Mode-Locked Fiber Laser with Polarization Output[J]. Laser & Optoelectronics Progress, 2017, 54(8): 081404

董自凯,徐润亲,田金荣,宋晏蓉. 全光纤偏振输出锁模光纤激光器[J]. 激光与光电子学进展, 2017, 54(8): 081404

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