Beam quality of truncated laser beams with amplitude modulations and phase fluctuations in turbulence

2012 ◽  
Vol 285 (24) ◽  
pp. 4793-4801
Author(s):  
Yuan Ma ◽  
Xiaoling Ji
Keyword(s):  
Beam Quality ◽  
Laser Beams ◽  
Phase Fluctuations

Measurement and analysis of wavefront structures of diode lasers

2017 ◽  
Vol 84 (1) ◽  
Author(s):  
Inga-Maria Eichentopf ◽  
Martin Reufer
Keyword(s):  
Semiconductor Lasers ◽  
Near Infrared ◽  
Beam Quality ◽  
Laser Beams ◽  
Modal Composition ◽  
Wavefront Analysis ◽  
Measurement And Analysis ◽  
Laser Sources ◽  
Insight Into

AbstractIn order to analyze the beam quality of laser sources wavefront measurements using a Shack–Hartmann sensor became an established way. With the detection of the wavefront deflection a change of the modal composition of the laser beam can be recorded directly. While this method is well known for nearly Gaussian laser beams, the wavefront analysis of broadarea semiconductor lasers is an open field of current research. Detailed analysis of the wavefront gives an additional path to get an insight into the transverse modal composition of semiconductor lasers, which have a dominant impact on the output parameters of the devices. For the presented investigations lasers emitting light in the near infrared (

scholarly journals Characterization of beam quality of unstable laser beams with the multiple hyperbolas method

2019 ◽  
Vol 12 ◽  
pp. 38-45 ◽  
Author(s):  
Lingqiang Meng ◽  
Qingqing Kong ◽  
Kunhao Ji ◽  
Zhigang Han ◽  
Hua Shen ◽  
...  
Keyword(s):  
Beam Quality ◽  
Laser Beams

Study of evaluating nearfield beam quality of the high power laser beams

Optik ◽  
2018 ◽  
Vol 157 ◽  
pp. 148-155 ◽  
Author(s):  
Sensen Li ◽  
Pengyuan Du ◽  
Fan Wu ◽  
Lei Ding ◽  
Zhiwei Lu ◽  
...  
Keyword(s):  
High Power ◽  
Beam Quality ◽  
Laser Beams ◽  
High Power Laser ◽  
Power Laser

Effect of thermal blooming on the beam quality of truncated laser beams

Optik ◽  
2016 ◽  
Vol 127 (20) ◽  
pp. 8350-8356 ◽  
Author(s):  
Xiaoqing Li ◽  
Xiaoling Ji
Keyword(s):  
Beam Quality ◽  
Laser Beams ◽  
Thermal Blooming

scholarly journals Beam quality of annular pulsed laser beams propagating through the nonlinear and dispersive atmosphere

2021 ◽  
pp. 1-1
Author(s):  
Yu Deng ◽  
Xiaoling Ji ◽  
Xiaoqing Li ◽  
Huan Wang ◽  
Ziyue Huang ◽  
...  
Keyword(s):  
Beam Quality ◽  
Pulsed Laser ◽  
Laser Beams

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
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