L波段调Q锁模类噪声方波脉冲光纤激光器  

Q-Switched Mode-Locked Rectangular Noise-Like Pulse in L-Band Fiber Laser

作　　者：潘婕妤 耿旭 孙梦秋 汪徐德[1] Pan Jieyu;Geng Xu;Sun Mengqiu;Wang Xude(School of Physics and Electronic Information,Huaibei Normal University,Huaibei 235000,Anhui,China)

机构地区：[1]淮北师范大学物理与电子信息学院,安徽淮北235000

出　　处：《激光与光电子学进展》2022年第13期283-288,共6页Laser & Optoelectronics Progress

基　　金：安徽省自然科学基金面上项目(2008085MF211);安徽省高校优秀青年人才支持计划重点项目(gxyqZD2019034);安徽省教学研究项目(2019jyxm0213);安徽省线上教学优秀课堂(2020xskt440);安徽省教学示范课(光通信技术基础);淮北师范大学研究生教育实践基地项目(2019jdxm05);淮北师范大学研究生创新基金(CX2022035)。

摘　　要：报道了L波段掺铒光纤激光器中调Q锁模类噪声方波脉冲的演化特性。通过改变泵浦功率以及偏振状态,激光器可以在1600 nm处实现类噪声方波脉冲的连续波锁模和调Q锁模运作。类噪声方波脉冲基频锁模重复率为1.64 MHz,最大脉冲宽度为17.51 ns。类噪声方波脉冲调Q锁模的重复率可从8.14 kHz调谐至18.18 kHz,调Q锁模包络宽度与方波脉冲宽度随泵浦功率演化趋势相反,调Q包络的最高平均能量可达1115.5 nJ,包络内方波脉冲的最大平均能量可达24.89 nJ,方波脉冲的峰值功率维持在1 W左右。该实验结果有助于人们深入理解L波段调Q锁模类噪声方波脉冲的动力学特性。The evolution characteristics of Q-switched mode-locked rectangular noise-like pulses were studied in an L-band erbium-doped fiber laser.By varying the pump power and polarization state,continuous-wave and Q-switched mode-locked based on rectangular noise-like pulses with 1600 nm central wavelength were realized in the fiber laser.The fundamental repetition rate and the maximum pulse width of the rectangular noise-like pulse were 1.64 MHz and 17.51 ns,respectively,and the repetition rate of the Q-switched mode-locked rectangular noise-like pulse could be tuned in the range of 8.14-18.18 kHz.The evolution trend of the Q-switched envelope width was opposite to that of the rectangular pulse width.The maximum average energy of the Q-switched envelope and the rectangular pulse inside the Q-switched envelope reached 1115.5 nJ and 24.89 nJ,respectively.The average peak power of the rectangular pulse was maintained at approximately 1 W.These results may aid in understanding the dynamic characteristics of Q-switched mode-locked rectangular noise-like pulses in L-band fiber lasers.

关 键 词：激光器 光纤激光器 非线性偏振旋转 类噪声方波脉冲 调Q锁模 

分 类 号：TN248[电子电信—物理电子学]