自相似锁模超短脉冲掺饵光纤激光器

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中图分类号：TN248.4 文献标识码：A DOI：10.37188/CJL.20240231 CSTR：32170.14.CJL.20240231

Self-similarMode-locked UltrashortPulseErbium-doped FiberAmplifier

ZHAO Hui，WANG Ji*，XIA Jinghua，WANG Guozheng，YE Haiqin， XUEMingkun，LIUShihan，JIAWeiyuan （SchoolofPhysics，ChangchunUniversityofScienceand Technology，Changchun13o022，China） *CorrespondingAuthor，E-mail：jiji_w@163.com

Abstract：A setof self-similar mode-locked ultrashort pulse fiber lasersand erbium-doped fiberamplifiers were designed and constructed.In the seed source part，the self-made carbon nanotube saturable absorber combined with dispersion management wasused tocontrol thenet dispersion in thecavityto produce aself-similar parabolic pulse for micro-positive dispersion，which wasusedas the seed source for subsequent power amplification and spectral broadening.Theamplificationstageadopts a bidirectional pumping method，and thesignal light is full gained through the high-gain and low-dispersion Er-doped fiber. The output power is ，thespectral width is 38.11 nm，and theamplificationgainis2O.65dB laser output.Finaly，the amplified self-similar mode-locked pulseis compressed by ordinary single-mode fiber，and theultrashort pulse laser output with acompressed pulse width of 283 fs is obtained.

KeyWords：fiberlaser；ultrashort pulse;self-similarpulse amplificatior

1引言

超短脉冲激光作为当前激光技术的一个重要研究方向，已被广泛应用于工业加工、测量、医疗等诸多领域[1-2]。（剩余9899字）