A 1.4-kW Mode-Controllable Fiber Laser System

We demonstrated a mode-controllable fiber laser system with output power of 1.4 kW level. The system consists of a kilowatt-scale master oscillator power amplifier and an active feedback control system based on the stochastic parallel-gradient descent algorithm. We can convert the LP 01 and LP 11 mo...

Full description

Saved in:
Bibliographic Details
Published in:Journal of lightwave technology 2021-04, Vol.39 (8), p.2536-2541
Main Authors: You, Yang, Bai, Gang, Zou, Xingxing, Li, Xuewen, Su, MengQi, Wang, Hanbin, Quan, Zhao, Liu, Meizhong, Zhang, Jingpu, Li, Qiurui, Shen, Hui, Qi, Yunfeng, He, Bing, Zhou, Jun
Format: Article
Language:English
Subjects:
Active control
Algorithms
Automatic active mode control
Energy conversion efficiency
Feedback control
Fiber lasers
high power
large-mode-area fiber
Optical fiber amplifiers
Optical fiber devices
Optical fiber networks
Optical fiber polarization
Optical fiber theory
Optimized production technology
Power amplifiers
Stability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We demonstrated a mode-controllable fiber laser system with output power of 1.4 kW level. The system consists of a kilowatt-scale master oscillator power amplifier and an active feedback control system based on the stochastic parallel-gradient descent algorithm. We can convert the LP 01 and LP 11 modes by performing an extremum search for power in the bucket of the output beam. Under the same pump power, we obtain the mode conversion of LP 11 to LP 01 , and the efficiency is as high as 99.5%. The maximum output power of LP 11 and LP 01 mode are 1396 W and 1389 W, respectively, with corresponding slope efficiencies of 85.8% and 84.1%.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2021.3049603