Frequency red shift induced by the enhancement of asymmetric absorption of saturable absorber in a Yb-doped mode-locked fiber laser

Ou，Shangming1; Sui，Qinglin2; Ma，Menglong2; Zhang，Qingmao2; Guo，Liang2; Zhang，Nan3; Liu，Huanhuan1; Shum，Perry Ping1,4

2023-10-01

10.1016/j.yofte.2023.103421

Optical Fiber Technology   Impact Factor & Quartile

1068-5200

1095-9912

The mechanism of frequency red shift from gain spectral center is revealed in a SESAM mode-locked Yb-doped fiber laser for the first time as far as we know, which is due to the asymmetric absorption of SESAM. The phenomenon is demonstrated by numerical simulations and confirmed by experimental results, which is attributed to a greater loss of the frequency components in the temporal rising edge, as a consequence pulses become asymmetric. With the balance between the asymmetric absorption of SESAM and the pulling effect of gain spectral center, pulses in the laser are able to be stabilized and the spectra are ultimately red shifted. The increase of temporal asymmetry, as well as the enhancement of frequency red shift as results of the increase of saturation energy are also demonstrated.

High repetition rate Mode-locked laser Pulse shaping Saturable absorber Spectral shift

SCI

English

First ; Corresponding

Stable Support Program for Higher Education Institutions from Shenzhen Science, Technology amp; Innovation Commission[20200925162216001] ; Special Funds for the Major Fields of Colleges and Universities by the Department of Education of Guangdong Province[2021ZDZX1023] ; Guangdong Basic and Applied Basic Research Foundation[2021B1515120013] ; Open Fund of State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications[IPOC2020A002] ; Natural Science Foundation of Guangdong Province[2022A1515011434] ; Open Projects Foundation of State Key Laboratory of Optical Fiber and Cable Manufacture Technology[SKLD2105] ; General Program of Shenzhen Science, Technology amp; Innovation Commission[JCYJ20220530113811026] ; China Postdoctoral Science Foundation[2022M721465] ; Key-Area Research and Development Program of Guangdong Province[2020B090922006] ; National Natural Science Foundation of China[62005081] ; Key-Area Research and Development Program of Foshan City[2120001009232]

Engineering ; Optics ; Telecommunications

Engineering, Electrical & Electronic ; Optics ; Telecommunications

WOS:001041781400001

ELSEVIER SCIENCE INC

ENGINEERING

2-s2.0-85165107271

Scopus

1.Department of Electronic and Electrical Engineering,College of Engineering,Southern University of Science and Technology,Shenzhen,1088 Xueyuan Avenue, Nanshan District,518110,China
2.Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices,School of Information and Opto-Electronic Science and Engineering,South China Normal University,Guangzhou,510006,China
3.Shenzhen JPT Opto-electronics Co.,Ltd,Shenzhen,518110,China
4.Pengcheng Laboratory,Shenzhen,518055,China

Ou，Shangming,Sui，Qinglin,Ma，Menglong,et al. Frequency red shift induced by the enhancement of asymmetric absorption of saturable absorber in a Yb-doped mode-locked fiber laser[J]. Optical Fiber Technology,2023,80.

Ou，Shangming.,Sui，Qinglin.,Ma，Menglong.,Zhang，Qingmao.,Guo，Liang.,...&Shum，Perry Ping.(2023).Frequency red shift induced by the enhancement of asymmetric absorption of saturable absorber in a Yb-doped mode-locked fiber laser.Optical Fiber Technology,80.

Ou，Shangming,et al."Frequency red shift induced by the enhancement of asymmetric absorption of saturable absorber in a Yb-doped mode-locked fiber laser".Optical Fiber Technology 80(2023).