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

页码：66 / 73

页数：8

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