169 citations · 718 across the 26 of their papers we have counts for
24 papers · 1 filter
Design considerations and performance analysis of fiber laser array system for structuring orbital angular momentum beams
Tianyue Hou, Qi Chang, Jinhu Long +2
Since the advent of optical orbital angular momentum (OAM), advances in the generation and manipulation of OAM beams have continuously impacted on intriguing applications including…
Laser array of coherent beam combination system revisited: angular domain perspective and fractal-based optimization
Tianyue Hou, Qi Chang, Pengfei Ma +2
Coherent beam combination (CBC) of fiber lasers holds promise for achieving high brightness laser systems, which have given rise to widespread applications such as particle acceler…
3 kW passive-gain-enabled metalized Raman fiber amplifier based on passive gain
Yizhu Chen, Tianfu Yao, Hu Xiao +2
Raman fiber lasers (RFLs) are currently promising and versatile light sources for a variety of applications. So far, operations of high power and brightness-enhanced RFLs have abso…
Unveiling the temporal dynamics in multi-longitudinal mode ytterbium-doped fiber lasers
Wei Liu, Pengfei Ma, Pu Zhou +1
In this work, we propose a unified spatio-temporal model to study the temporal dynamics in continuously pumped ytterbium-doped fiber lasers (YDFLs). Different from previously repor…
Kilowatt-level Yb-Raman fiber amplifier with narrow-linewidth and near-diffraction-limited beam quality
Pengfei Ma, Yu Miao, Wei Liu +2
By focusing on a typical emitting wavelength of 1120 nm as an example, we present the first demonstration of a high-efficiency, narrow-linewidth kilowatt-level all-fiber amplifier…
Effects of four-wave-mixing in high-power Raman fiber amplifiers
Wei Liu, Pengfei Ma, Pu Zhou +1
In this work, we derive and present the coupled amplitude equations to describe the evolutions of different spectral components in different transverse modes for Raman fiber amplif…
Preliminary study on the modal decomposition of Hermite Gaussian beams via deep learning
Yi An, Tianyue Hou, Jun Li +4
The Hermite-Gaussian (HG) modes make up a complete and orthonormal basis, which have been extensively used to describe optical fields. Here, we demonstrate, for the first time to o…
Deep learning-based phase control method for coherent beam combining and its application in generating orbital angular momentum beams
Tianyue Hou, Yi An, Qi Chang +8
We incorporate deep learning (DL) into coherent beam combining (CBC) systems for the first time, to the best of our knowledge. Using a well-trained convolutional neural network DL…
Pure passive fiber enabled highly efficient Raman fiber amplifier with record kilowatt power
Yizhu Chen, Jinyong Leng, Hu Xiao +2
Kilowatt-level high efficiency all-fiberized Raman fiber amplifier based on pure passive fiber is proposed for the first time in this paper. The laser system is established on mast…
First demonstration of temperature control enabled high power mode-switchable fiber laser
Jiaxin Song, Haiyang Xu, Hanshuo Wu +3
A transverse mode-switching method was proposed and demonstrated in a high-power ytterbium-doped fiber oscillator. 17.8 W LP11 mode laser was obtained, and it could be switched to…
Optical rogue wave in random distributed feedback fiber laser
Jiangming Xu, Jian Wu, Jun Ye +4
The famous demonstration of optical rogue wave (RW)-rarely and unexpectedly event with extremely high intensity-had opened a flourishing time for temporal statistic investigation a…
Spectral adjustment of a powerful random fiber laser
Jun Ye, Jiangming Xu, Hanshuo Wu +4
Random fiber laser (RFL) based on random distributed feedback and Raman gain has earned much attention in recent years. In this presentation, we demonstrate a powerful linearly pol…
High power orbital-angular-momentum beam generation system based on coherent beam array combination technique
Dong Zhi, Yanxing Ma, Pu Zhou +4
High power orbital-angular-momentum (OAM) beam has dominant advantages in capacity increasing and data receiving for free-space optical communication systems at long distance. Util…
Self-started stable pulsing operation of random fiber laser
Jiangming Xu, Jun Ye, Hanwei Zhang +5
Unlike traditional fiber laser with defined resonant cavity, random fiber laser (RFL), whose operation is based on distributed gain and feedback via Rayleigh scattering and stimula…
High power highly stable passively Q-switched fiber laser based on monolayer graphene
Hanshuo Wu, Jiaxin Song, Jian Wu +4
We demonstrate a monolayer graphene based passively Q-switched fiber laser with three-stage amplifiers that can deliver over 80 W average power at 1064 nm. The highest average powe…
Incoherently pumped high-power linearly-polarized single-mode random fiber laser: experimental investigations and theoretical prospects
Jiangming Xu, Zhaokai Lou, Jun Ye +5
We present a hundred-watt-level linearly-polarized random fiber laser (RFL) pumped by incoherent broadband amplified spontaneous emission (ASE) source and prospect the power scalin…
Study on the power scaling and mode instability property in an all-fiber narrow-linewidth tapered fiber amplifier
Long Huang, Zichao Zhou, Chen Shi +3
We develop a high-power narrow-linewidth fiber amplifier based on a tapered Yb-doped fiber. In the experiment, the narrow end of the tapered fiber is used as the input port of both…
Influence of seed power on mode instabilities in high power fiber amplifiers
Rumao Tao, Xiaolin Wang, Pu Zhou +3
We use a semi-analytical model of stimulated thermal Rayleigh scattering to present theoretical study of seed power on mode instability with the presence of photodarkening. The beh…
Study of dopant concentrations on thermal induced mode instability in high power fiber amplifiers
Rumao Tao, Pengfei Ma, Xiaolin Wang +2
Dependence of mode instabilities (MI) on ytterbium dopant concentrations in high power fiber amplifiers has been investigated. It is theoretically shown that, by only varying the f…
Study of wavelength dependence of mode instability based on a semi-analytical model
Rumao Tao, Pengfei Ma, Xiaolin Wang +2
We present theoretical study of wavelength dependence of mode instability (MI) in high power fiber lasers, which employs an improved semi-analytical theoretical model. The influenc…
Influence of core NA on Thermal-Induced Mode Instabilities in High Power Fiber Amplifiers
Rumao Tao, Pengfei Ma, Xiaolin Wang +2
We report on the influence of core NA on thermal-induced mode instabilities (MI) in high power fiber amplifiers. Influence of core NA and V-parameter on MI has been investigated nu…
Polarization Effects on Thermal-Induced Mode Instabilities in High Power Fiber Lasers
Rumao Tao, Pengfei Ma, Xiaolin Wang +2
We present detailed studies of the effect of polarization on thermal-induced mode instability (MI) in ytterbium-doped fiber amplifiers. Based on a steady-state theoretical model, w…
Mitigating of Modal Instabilities in Linearly-Polarized Fiber Amplifiers by Shifting Pump Wavelength
Rumao Tao, Pengfei Ma, Xiaolin Wang +2
We investigated the effct of pump wavelength on the modal instabilities (MI) in high power linearly-polarized Yb-doped fiber amplifiers. We built a novel semi-analytical model to d…
1.3kW monolithic linearly-polarized single-mode MOPA and strategies for mitigating mode instabilities
Rumao Tao, Pengfei Ma, Xiaolin Wang +2
We report on the high power amplification of 1064nm linearly-polarized laser in all-fiber polarization-maintained MOPA, which can operate at output power level of 1.3kW. The main a…