Stable Ultrashort Pulse Generation Using a Coiled and Tapered Few-Mode-Fiber Polarization Controller as a Saturable Absorber

被引：0
|
作者：
Zhao, F. Y. [1 ]
Hu, X. H. [2 ]
Zou, F. M. [1 ]
Zhang, T. [2 ]
Wang, Y. S. [2 ]
Lan, J. Q. [1 ]
机构：
[1] Fujian Univ Technol, Sch Elect Elect Engn & Phys, Fuzhou 350118, Fujian, Peoples R China
[2] Chinese Acad Sci, State Key Lab Transient Opt & Photon, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China
来源：
JOURNAL OF RUSSIAN LASER RESEARCH | 2024年 / 45卷 / 01期
基金：
中国国家自然科学基金;
关键词：
fiber laser; mode-locked graded-index few-mode fiber; saturable absorber; NONLINEAR MULTIMODAL INTERFERENCE; HYBRID STRUCTURE; LASER; WAVELENGTH; SOLITON; DISPERSION; GRAPHENE;
D O I：
10.1007/s10946-024-10189-3
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a coiled and tapered graded-index few-mode-fiber (FMF) polarization controller (PC) as a saturable absorber (SA) in an all-fiber laser. We obtain the 845 fs ultrashort pulse with a signal-to-noise ratio (SNR) of 65 dB, using a tapered graded-index FMF of 40 cm in the cavity. The spectrum is centered at 1588.2 nm with a 3 dB spectral bandwidth of 4.04 nm. Furthermore, a Q-switched mode-locked state is observed between 140 and 360 mW of the pump power in the cavity. The results further demonstrate the application of a coiled and tapered graded-index FMF PC as a SA for stable high-energy ultrashort pulse formation and provide a technical method for generating ultrashort pulses.
引用
收藏
页码：66 / 73
页数：8
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