Coherent combining efficiency improvement based on a focused conformal projection fiber laser array

2016 ◽  
Author(s):  
Dong Zhi ◽  
Yanxing Ma ◽  
Xiaolin Wang ◽  
Pu Zhou ◽  
Lei Si
Keyword(s):  
Fiber Laser ◽  
Efficiency Improvement ◽  
Laser Array ◽  
Combining Efficiency ◽  
Coherent Combining

Analysis and Design of Coherent Combining of two Q-Switched Fiber Laser in Mach-Zehnder Type Cavity

2019 ◽  
Vol 40 (4) ◽  
pp. 393-400
Author(s):  
Ali Nassiri ◽  
Hafida Idrissi-Saba ◽  
Abdelkader Boulezhar
Keyword(s):  
Fiber Laser ◽  
Peak Power ◽  
High Energy ◽  
Nanosecond Pulse ◽  
High Peak ◽  
High Peak Power ◽  
Analysis And Design ◽  
Coupled Cavities ◽  
Combining Efficiency ◽  
Coherent Combining

Abstract In this work, we have developed an analytical model of an actively Q-switched Ytterbium-doped fiber laser by using two coupled cavities with amplifying fibers in Mach–Zehnder interferometer configuration. This oscillator system provides high peak power and high energy nanosecond pulse. The pulse energy is almost twice the energy of an individual fiber laser with a combining efficiency goes up 99%. This concept brings some novel perspectives for scaling the high energy and high peak power of nanosecond pulse fiber laser.

Investigation of the influence of optical nonlinearity on combining efficiency in ultrashort pulsed fiber laser coherent combining system

2021 ◽  
Author(s):  
Yun-Chen Zhu ◽  
Ping-Xue Li ◽  
Chuan-Fei Yao ◽  
Chun-Yong Li ◽  
Wen-Hao Xiong ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Physical Mechanism ◽  
Theoretical Work ◽  
Optical Nonlinearity ◽  
Laser Beams ◽  
Spectral Information ◽  
Spectral Coherence ◽  
Combining Efficiency ◽  
Pulsed Fiber Laser ◽  
Coherent Combining

Abstract In this paper, the influence of optical nonlinearity on combining efficiency in ultrashort pulsed fiber laser coherent combining system is investigated theoretically and experimentally. In the theoretical work, a new theoretical algorithm for the coherent combining efficiency, which can be used to quantify the spectral coherence decay induced by optical nonlineary imbalance between the sub-beams, is presented. The spectral information of the sub-beam is obtained by numerically solving the nonlinear Schrödinger equation (NLSE) in this algorithm to ensure an accurate prediction. In the experimental work, the coherent combining of two all-fiber picosecond lasers is achieved, and the influence of imbalanced optical nonlinearity on the combining efficiency is studied, which agrees with the theoretical prediction. This paper reveals the physical mechanism for the influence of optical nonlinearity on the combining efficiency, which is valuable for the coherent combining of ultrashort pulsed fiber laser beams.

Compact internal sensing phase locking system for coherent combining of fiber laser array

2022 ◽  
Vol 148 ◽  
pp. 107775
Author(s):  
Jinhu Long ◽  
Hongxiang Chang ◽  
Yuqiu Zhang ◽  
Tianyue Hou ◽  
Qi Chang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Phase Locking ◽  
Laser Array ◽  
Coherent Combining

Diffractive coherent combining of a 25 kW fiber laser array into a 19 kW Gaussian beam

2012 ◽  
Vol 37 (14) ◽  
pp. 2832 ◽  
Author(s):  
Shawn M. Redmond ◽  
Daniel J. Ripin ◽  
Charles X. Yu ◽  
Steven J. Augst ◽  
Tso Yee Fan ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Gaussian Beam ◽  
Laser Array ◽  
Coherent Combining

Optimization of the arrangement of fiber laser array in beam coherent combining

2009 ◽  
Vol 56 (8) ◽  
pp. 1036-1043
Author(s):  
Jianfeng Li ◽  
Zhiyong Dai ◽  
Zhonghua Ou ◽  
Lixun Zhang ◽  
Yongzhi Liu ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Laser Array ◽  
Coherent Combining

Research on phase-detecting method for coherent combining beams in fiber laser array

2007 ◽  
Vol 3 (6) ◽  
pp. 455-458 ◽  
Author(s):  
Xing-chun Chu ◽  
Sheng-bao Zhan ◽  
Shang-hong Zhao ◽  
Yun-xia Li ◽  
Jie Xu
Keyword(s):  
Fiber Laser ◽  
Laser Array ◽  
Coherent Combining ◽  
Detecting Method
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