激光与光电子学进展, 2020, 57 (9): 091401, 网络出版: 2020-05-06  

2 μm掺铥光纤激光器中自相似脉冲产生的理论研究 下载: 1326次

Theoretical Analysis of Self-Similar Pulse Generation in 2 μm Thulium-Doped Fiber Laser
作者单位
北京交通大学光波技术研究所全光网络与现代通信网教育部重点实验室, 北京 100044
摘要
以2 μm掺铥锁模光纤激光器的理论模型,以及非线性薛定谔方程(NLSE)为依据,分析了激光器内自相似脉冲的演化条件,并输出了峰值功率约为22.66 W的自相似脉冲,同时研究了腔内净色散、色散补偿光纤长度和增益系数等参量对自相似脉冲的影响。结果表明,随着腔内净色散和色散补偿光纤长度的增加,脉冲宽度随之增加,单脉冲能量随之降低,而小信号增益系数的增加会使脉冲宽度和单脉冲能量均随之增加。
Abstract
Based on a theoretical model of a 2-μm thulium-doped mode-locked fiber laser and nonlinear Schr?dinger equation (NLSE), this study analyzed the evolution conditions of self-similar pulses in the laser. The peak power output of the self-similar pulse was approximately 22.66 W. Further, the effects of parameters, such as net dispersion, length of dispersion-compensation fiber, and gain coefficient on self-similar pulses were simultaneously studied. The results show that increasing the net dispersion in the cavity and the length of the dispersion-compensation fiber increases the pulse width and decreases the energy of the single pulse. Moreover, increasing the small-signal gain coefficient increases both the pulse width and energy of the single pulse.

石郑楠, 延凤平, 韩文国, 张鲁娜. 2 μm掺铥光纤激光器中自相似脉冲产生的理论研究[J]. 激光与光电子学进展, 2020, 57(9): 091401. Zhengnan Shi, Fengping Yan, Wenguo Han, Luna Zhang. Theoretical Analysis of Self-Similar Pulse Generation in 2 μm Thulium-Doped Fiber Laser[J]. Laser & Optoelectronics Progress, 2020, 57(9): 091401.

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