scholarly journals Laser-controlled adaptive optics for beam quality improvements in a multi-pass thin-disk amplifier

2018 ◽  
Vol 43 (14) ◽  
pp. 3453 ◽  
Author(s):  
Richard Lange ◽  
Daniel Kolbe
Keyword(s):  
Adaptive Optics ◽  
Beam Quality ◽  
Thin Disk ◽  
Quality Improvements

scholarly journals 1178 J, 527 nm near diffraction limited laser based on a complete closed-loop adaptive optics controlled off-axis multi-pass amplification laser system

2021 ◽  
Vol 9 ◽  
Author(s):  
Deen Wang ◽  
Xin Zhang ◽  
Wanjun Dai ◽  
Ying Yang ◽  
Xuewei Deng ◽  
...  
Keyword(s):  
Laser Beam ◽  
Adaptive Optics ◽  
Closed Loop ◽  
Focal Spot ◽  
Beam Quality ◽  
Laser System ◽  
Diffraction Limit ◽  
Kdp Crystal ◽  
Main Amplifier

Abstract A 1178 J near diffraction limited 527 nm laser is realized in a complete closed-loop adaptive optics (AO) controlled off-axis multi-pass amplification laser system. Generated from a fiber laser and amplified by the pre-amplifier and the main amplifier, a 1053 nm laser beam with the energy of 1900 J is obtained and converted into a 527 nm laser beam by a KDP crystal with 62% conversion efficiency, 1178 J and beam quality of 7.93 times the diffraction limit (DL). By using a complete closed-loop AO configuration, the static and dynamic wavefront distortions of the laser system are measured and compensated. After correction, the diameter of the circle enclosing 80% energy is improved remarkably from 7.93DL to 1.29DL. The focal spot is highly concentrated and the 1178 J, 527 nm near diffraction limited laser is achieved.

Optimization of beam quality and optical-to-optical efficiency of Yb:YAG thin-disk regenerative amplifier by pulsed pumping

2014 ◽  
Vol 39 (6) ◽  
pp. 1441 ◽  
Author(s):  
Michal Chyla ◽  
Taisuke Miura ◽  
Martin Smrz ◽  
Helena Jelinkova ◽  
Akira Endo ◽  
...  
Keyword(s):  
Beam Quality ◽  
Thin Disk ◽  
Regenerative Amplifier ◽  
Optical Efficiency ◽  
Pulsed Pumping

scholarly journals Evaluating the Potential of Laser Beam Quality Improvement by Adaptive Optics System

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Kai Han ◽  
Wenda Cui ◽  
Yi Yang ◽  
Fengjie Xi ◽  
Xiao Li ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Laser Intensity ◽  
Beam Quality ◽  
Evaluation Criteria ◽  
High Spatial Frequency ◽  
High Energy ◽  
Improvement Potential ◽  
Frequency Components ◽  
Laser Beam Quality ◽  
Adaptive Optics System

AO (adaptive optics) systems have been extensively used to improve the beam quality in high-energy lasers; however, few studies have focused on how much the beam quality could be improved. A novel evaluation criteria and factor is presented in this paper. The factor, defined as power in ring (PIR), is expressed by distinguishing the low- and high-spatial frequency components in the far-field laser intensity distribution. Beams with different PIR values are generated in our model, and then they are compensated by AO systems. Calculation result shows that the PIR factor could evaluate a laser beam’s improvement potential by an AO system quantitatively.

Methods for Slow Axis Beam Quality Improvements Leading to High Brightness Multi-kW Direct Diode Laser Systems

2014 ◽  
Author(s):  
Haiyan An ◽  
Yihan Xiong ◽  
Ching-Long Jiang ◽  
Berthold Schmidt ◽  
Georg Treusch
Keyword(s):  
Diode Laser ◽  
Beam Quality ◽  
Quality Improvements ◽  
High Brightness ◽  
Slow Axis ◽  
Laser Systems

Mode Distributions of Large-Aperture High-Power Thin Disk Laser and Beam Quality Diagnosis

2011 ◽  
Vol 31 (9) ◽  
pp. 0900110
Author(s):  
周寿桓 Zhou Shouhuan ◽  
冯国英 Feng Guoying
Keyword(s):  
High Power ◽  
Beam Quality ◽  
Thin Disk ◽  
Disk Laser ◽  
Large Aperture ◽  
Thin Disk Laser ◽  
Quality Diagnosis

Beam quality for thin-disk multi-pass amplifier based on dual parabolic mirrors

2021 ◽  
Author(s):  
Hantian Chen ◽  
Jing Dong ◽  
Hailin Wang ◽  
Guangzhi Zhu ◽  
Xiao Zhu
Keyword(s):  
Beam Quality ◽  
Thin Disk

Beam quality in high-power thin-disk lasers: influence and measurement of the radial inversion profile

2019 ◽  
Author(s):  
F. Saltarelli ◽  
D. Koenen ◽  
L. Lang ◽  
I. J. Graumann ◽  
C. R. Phillips ◽  
...  
Keyword(s):  
High Power ◽  
Beam Quality ◽  
Thin Disk
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