连续泵浦掺铥双包层光纤激光器的自脉冲现象

1)深圳市激光工程重点实验室,先进光学精密制造技术广东普通高校重点实验室,深圳 518060; 2)深圳大学电子科学与技术学院,深圳 518060

光电子与激光技术; 掺铥光纤; 自脉冲; 可饱和吸收; 自相位调制; 脉冲

Self-pulsing in a continuous wave pumped Tm-doped double-clad fiber laser
Du Geguo1, 2, Song Yuli1, 2, Xu Yi1, 2, Wang Jinzhang1, Guo Chunyu1, and Cao Wenhua2

Du Geguo1, 2, Song Yuli1, 2, Xu Yi1, 2, Wang Jinzhang1, Guo Chunyu1, and Cao Wenhua21)Shenzhen Key Laboratory of Laser Engineering, Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institution, Shenzhen University, Shenzhen 518060, P.R.China2)College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, P.R.China

optoelectronic and laser technology; Tm-doped fiber; self-pulsing; saturable absorption; self-phase modulation; pulse

DOI: 10.3724/SP.J.1249.2015.04422

备注

在2 μm波段运转的掺铥双包层光纤激光器中观察到了自脉冲(类锁模)现象.对单端和双端泵浦方式以及不同腔长度下的输出进行比较研究,认为这种现象的主要产生机制可能为掺铥光纤中的自相位调制和离子簇导致的可饱和吸收效应.

We observe the self-pulsing(self-mode-locking like)in a Tm-doped silica fiber laser operating at a wavelength around 2 μm. To get further insight into the variation and evolution of the self-mode-locking, we investigate both single-end and double-end pumping configurations with different cavity-lengths. We find that the main mechanism of self-mode-locking can be attributed to the combination of self-phase modulation effect and the saturable absorption effect caused by ion pairs in Tm-doped fiber.

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