Fraunhofer diffraction and the beam quality β factor of a laser beam with sinusoidal wavefront

2021 ◽  
Author(s):  
Dmitry Yagnyatinskiy ◽  
Victor Fedoseyev
Keyword(s):  
Laser Beam ◽  
Beam Quality ◽  
Fraunhofer Diffraction

Measuring laser beam quality by use of phase retrieval and Fraunhofer diffraction

2015 ◽  
Author(s):  
Wenbo Shi ◽  
Zengbao Zhang ◽  
Xin He ◽  
Qin Liu ◽  
Zhiguo Zhang ◽  
...  
Keyword(s):  
Laser Beam ◽  
Phase Retrieval ◽  
Beam Quality ◽  
Fraunhofer Diffraction ◽  
Laser Beam Quality

Beam quality measurements using digitized laser beam images

1989 ◽  
Vol 28 (21) ◽  
pp. 4569 ◽  
Author(s):  
Michael D. Duncan ◽  
Rita Mahon
Keyword(s):  
Laser Beam ◽  
Beam Quality ◽  
Quality Measurements

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.

On-line control of laser beam quality by means of diffractive optical components

2003 ◽  
Author(s):  
Michael R. Duparre ◽  
Carsten Rockstuhl ◽  
Andreas Letsch ◽  
Siegmund Schroeter ◽  
Vladimir S. Pavelyev
Keyword(s):  
Laser Beam ◽  
Beam Quality ◽  
Optical Components ◽  
On Line ◽  
Laser Beam Quality

scholarly journals Laser beam quality and pointing measurement with an optical resonator

2007 ◽  
Vol 78 (7) ◽  
pp. 073103 ◽  
Author(s):  
Patrick Kwee ◽  
Frank Seifert ◽  
Benno Willke ◽  
Karsten Danzmann
Keyword(s):  
Laser Beam ◽  
Beam Quality ◽  
Optical Resonator ◽  
Laser Beam Quality
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