Self-focusing effect on the beam quality of Hermite-Gaussian beams propagating upwards through the inhomogeneous atmosphere

2020 ◽  
Author(s):  
Xiaoli Fan ◽  
Xiaoling Ji ◽  
HUAN WANG ◽  
YU DENG ◽  
Hao Zhang
Keyword(s):  
Beam Quality ◽  
Gaussian Beams ◽  
Focusing Effect ◽  
Inhomogeneous Atmosphere ◽  
Self Focusing

Influence of thermal blooming on the beam quality of an array of Hermite–Gaussian beams propagating in the atmosphere

2020 ◽  
Vol 59 (34) ◽  
pp. 10944
Author(s):  
Zhoulin Ding ◽  
Xiaoqing Li ◽  
Jianyong Cao ◽  
Xiaoling Ji
Keyword(s):  
Beam Quality ◽  
Gaussian Beams ◽  
Thermal Blooming

scholarly journals The beam quality of vectorial nonparaxial Hermite-Laguerre-Gaussian beams

2006 ◽  
Vol 55 (9) ◽  
pp. 4569
Author(s):  
Kang Xiao-Ping ◽  
He Zhong ◽  
Lü Bai-Da
Keyword(s):  
Beam Quality ◽  
Gaussian Beams

Method to evaluate beam quality of Gaussian beams with aberrations

2012 ◽  
Vol 51 (27) ◽  
pp. 6539 ◽  
Author(s):  
Yuntao Qiu ◽  
Lei Huang ◽  
Mali Gong ◽  
Liu Qiang ◽  
Ping Yan ◽  
...  
Keyword(s):  
Beam Quality ◽  
Gaussian Beams

The Far Properties of Nonparaxial Cosine-Squared Gaussian Beams

2015 ◽  
Vol 738-739 ◽  
pp. 440-443
Author(s):  
Xiao Ping Kang ◽  
Chang Wei Li ◽  
Zhong He ◽  
Lu Mei Zhao
Keyword(s):  
Closed Form ◽  
Free Space ◽  
Beam Quality ◽  
Closed Form Expression ◽  
Gaussian Beams ◽  
Far Field ◽  
Form Expression

Based on the Rayleigh-Sommerfeld diffraction integrals, the closed-form expression of nonparaxial cosine-squared Gaussian beams in free space is derived. The power in the bucket (PIB) of nonparaxial regime is introduced to characterize the beam quality of nonparaxial beams in the far field. It is found that the intensity and PIB of nonparaxial cosine-squared Gaussian beams depends on f parameter, decentered parameter, and the PIB is additionally depends on the bucket’s size taken. For a given bucket’s size, the smaller decentered parameter and f parameter result in the better power focusability in the far field and the better beam quality.

Improving electron beam quality of the Boeing free electron laser

1991 ◽  
Vol 304 (1-3) ◽  
pp. 336-341 ◽  
Author(s):  
D.H. Dowell ◽  
M.L. Laucks ◽  
A.R. Lowrey ◽  
M. Bemes ◽  
A. Currie ◽  
...  
Keyword(s):  
Electron Beam ◽  
Free Electron ◽  
Free Electron Laser ◽  
Beam Quality

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.

Beam quality of photonic-crystal fibers

2005 ◽  
Vol 23 (7) ◽  
pp. 2267-2270 ◽  
Author(s):  
A. Mafi ◽  
J.V. Moloney
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Beam Quality ◽  
Crystal Fibers

scholarly journals Improvement of the spatial beam quality of laser sources with an intracavity Bragg grating

2003 ◽  
Vol 28 (4) ◽  
pp. 242 ◽  
Author(s):  
Sylvie Yiou ◽  
François Balembois ◽  
Patrick Georges ◽  
Jean-Pierre Huignard
Keyword(s):  
Beam Quality ◽  
Bragg Grating ◽  
Spatial Beam ◽  
Laser Sources
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