Mode-locked femtosecond polarization-maintaining Yb-doped fiber laser with a figure-nine configuration

被引：11
作者：
Chu, Hongwei [1 ]
Zhao, Shengzhi [1 ]
Li, Guiqiu [1 ]
Li, Ming [1 ]
Li, Dechun [1 ]
机构：
[1] Shandong Univ, Sch Informat Sci & Engn, Qingdao 266237, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2021年 / 482卷
基金：
中国国家自然科学基金;
关键词：
Mode-locking laser; Fiber laser; Ultrafast lasers; Figure-of-9; laser; NALM; FREQUENCY COMB; OPERATION; PULSES; NOISE;
D O I：
10.1016/j.optcom.2020.126595
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In the present work, we demonstrated a mode-locked polarization-maintaining (PM) Yb-doped fiber laser based on the figure-of-nine configuration to generate similar to 100 fs pulses at 1 mu m. For the dispersion management, a pair of gratings was inserted into the laser resonator to compensate the group delay dispersion (GDD). The stable, self-started passive mode-locking operation was realized with a pulse duration of 122 fs and a full width at half maximum (FWHM) spectral width of 14.1 nm (3 dB bandwidth). The output power was 21 mW at a repetition rate of 34.4 MHz, corresponding to a pulse energy of 0.61 nJ and a peak power of 4.85 kW. Moreover, the theoretical investigation based on the nonlinear Schrodinger equation was implemented to explore the mode-locking properties. Numerical analyses were almost in agreement with the experimental results.
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页数：4
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