自相似锁模超短脉冲掺铒光纤激光器  

Self-similar Mode-locked Ultrashort Pulse Erbium-doped Fiber Amplifier

作　　者：赵辉 王蓟[1] 夏敬华 王国政[1] 叶海钦 薛明昆 刘诗晗 贾惟元 ZHAO Hui;WANG Ji;XIA Jinghua;WANG Guozheng;YE Haiqin;XUE Mingkun;LIU Shihan;JIA Weiyuan(School of Physics,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学物理学院,吉林长春130022

出　　处：《发光学报》2025年第1期110-116,共7页Chinese Journal of Luminescence

基　　金：吉林省科技厅国际合作项目(20220402021 GH)。

摘　　要：设计并搭建了自相似锁模超短脉冲光纤激光器和掺铒光纤放大器,在种子源部分,利用自制的碳纳米管可饱和吸收体结合色散管理的方式,控制腔内净色散为微正色散产生了自相似抛物线型锁模脉冲,并以此作为种子源进行后续的功率放大和光谱展宽。光纤放大级采用的是双向泵浦的方式,通过高增益低色散的掺铒光纤将种子光充分增益后,得到输出功率39.51 mW、光谱宽度38.11 nm、放大增益20.65 dB的激光输出。最后,采用普通单模光纤对放大后的自相似锁模脉冲进行压缩,获得压缩后脉冲宽度283 fs的超短脉冲激光输出。A set of self-similar mode-locked ultrashort pulse fiber lasers and erbium-doped fiber amplifiers were designed and constructed.In the seed source part,the self-made carbon nanotube saturable absorber combined with dispersion management was used to control the net dispersion in the cavity to produce a self-similar parabolic pulse for micro-positive dispersion,which was used as the seed source for subsequent power amplification and spectral broadening.The amplification stage adopts a bidirectional pumping method,and the signal light is fully gained through the high-gain and low-dispersion Er-doped fiber.The output power is 39.51 mW,the spectral width is 38.11 nm,and the amplification gain is 20.65 dB laser output.Finally,the amplified self-similar mode-locked pulse is compressed by ordinary single-mode fiber,and the ultrashort pulse laser output with a compressed pulse width of 283 fs is obtained.

关 键 词：光纤激光器 超短脉冲 自相似脉冲放大 

分 类 号：TN248.4[电子电信—物理电子学]