Observation and optimization of 2 μm mode‐locked pulses in all‐fiber net anomalous dispersion laser cavity
Observation and optimization of 2 μm mode-locked pulses in all-fiber net anomalous dispersion laser cavity作者机构：National and Local Joint Engineering Research Center of Space Optoelectronics TechnologyChangchun University of Science and TechnologyChangchun 130022China College of Opto-Electronic EngineeringChangchun University of Science and TechnologyChangchun 130022China
出 版 物：《Opto-Electronic Advances》 (光电进展（英文）)
年 卷 期：2020年第3卷第11期
页 面：10-17页
核心收录：
学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程]
基 金：This work was supported in part by the National Natural Science Foundation of China 61975021 in part by the Science and Technology Project of Jilin Province under Grant 20170414041GH in part by the Research Project of Jilin Provincial Education Department under Grant JJKH20181090KJ
主 题：fiber lasers mode-locked lasers 2μm fiber lasers
摘 要：We integrally demonstrate 2μm mode-locked pulses performances in all-fiber net anomalous dispersion *** mode-locking operations with the center wavelength around 1950–1980 nm can be achieved by using the nonlinear polarization rotation structure and properly designing the dispersion management *** soliton is firstly obtained with a total anomalous dispersion *** to the contribution of commercial ultra-high numerical aperture fibers,net dispersion is reduced to-0.077 *** that stretched pulse with 19.4 nm optical bandwidth is obtained and the de-chirped pulse-width can reach 312 fs using extra-cavity *** pump power greater than 890 mW,stretched pulse can evolve into noise-like pulse with 41.3 nm *** envelope and peak of such broadband pulse can be compressed with up to 2.2 ps and 145 fs,*** single pulse energy of largely chirped stretched and noise-like pulse can reach 1.785 nJ and 1.53 nJ,***,extra-cavity compression can also contribute to a significant increase of peak power.
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