scholarly journals Enhanced, fast-running scaling law model of thermal blooming and turbulence effects on high energy laser propagation

2013 ◽  
Vol 21 (12) ◽  
pp. 14789 ◽  
Author(s):  
Noah R. Van Zandt ◽  
Steven T. Fiorino ◽  
Kevin J. Keefer
Keyword(s):  
Scaling Law ◽  
High Energy ◽  
Laser Propagation ◽  
Fast Running ◽  
Thermal Blooming ◽  
Turbulence Effects ◽  
Energy Laser ◽  
High Energy Laser

scholarly journals Parametric Analysis of Thermal Blooming for High Energy Lasers Considering the Atmospheric Environment

2020 ◽  
Author(s):  
Juan Coronel ◽  
Jawaher Alameri ◽  
John Pantoja ◽  
Chaouki Kasmi ◽  
Fahad Alyafei
Keyword(s):  
High Energy ◽  
Atmospheric Environment ◽  
Laser Beams ◽  
Nonlinear Phenomena ◽  
Thermal Distortion ◽  
Laser Propagation ◽  
Thermal Blooming ◽  
Energy Laser ◽  
High Energy Laser

Many studies were dedicated to the analysis of the propagation of High Energy Laser beams in free space. Laser beams propagation performance in the presence of atmospheric constituents may degrade by some interrelated linear and nonlinear phenomena. In this study, it is proposed a self-contained model including non-linear air temperature effect producing thermal distortion in laser propagation. In order to better understand the underlying phenomena, a set of quantifiers are described leading to the characterization of the laser thermal distortion. A parametric study is finally proposed in order to highlight the influence of the different parameters of the simulations.

scholarly journals A Fast Calculation Method of Far-Field Intensity Distribution with Point Spread Function Convolution for High Energy Laser Propagation

2021 ◽  
Vol 11 (10) ◽  
pp. 4450
Author(s):  
Huimin Ma ◽  
Pengfei Zhang ◽  
Jinghui Zhang ◽  
Haiqiu Liu ◽  
Chengyu Fan ◽  
...  
Keyword(s):  
Field Intensity ◽  
Intensity Distribution ◽  
Engineering Application ◽  
High Energy ◽  
Far Field ◽  
Laser Propagation ◽  
Thermal Blooming ◽  
Energy Laser ◽  
High Energy Laser ◽  
Field Intensity Distribution

The turbulence effect, thermal blooming effect, laser beam aberration, platform jitter, and other effects in the process of high energy laser propagation in the atmosphere will cause serious degradation of laser beam quality, which will have a negative impact on the actual application of laser propagation engineering. It is important in the engineering application of high-energy laser propagation to evaluate the far-field intensity distribution quickly. Based on the optical transfer function (OTF) theory of imaging system, the propagation process of high-energy lasers is modeled as the imaging process of point source. By using the convolution of point spread function (PSF) of jitter, turbulence, thermal blooming, and aberration of emission system, fast calculation of the far-field intensity distribution of high energy laser is realized. The calculation results are compared with those obtained by the 4D wave optics simulation program in different propagation scenarios. The results show that the calculated facula distribution and encircled energy of this method are in good agreement with the simulation results of wave optics, which can realize the fast and accurate evaluation of the far-field intensity distribution of high-energy laser propagation and provide a reference for practical engineering application.

scholarly journals Parametric Analysis of Thermal Blooming for High Energy Lasers Considering the Atmospheric Environment

2020 ◽  
Author(s):  
Juan Coronel ◽  
Jawaher Alameri ◽  
John Pantoja ◽  
Chaouki Kasmi ◽  
Fahad Alyafei
Keyword(s):  
High Energy ◽  
Atmospheric Environment ◽  
Laser Beams ◽  
Nonlinear Phenomena ◽  
Thermal Distortion ◽  
Laser Propagation ◽  
Thermal Blooming ◽  
Energy Laser ◽  
High Energy Laser

Many studies were dedicated to the analysis of the propagation of High Energy Laser beams in free space. Laser beams propagation performance in the presence of atmospheric constituents may degrade by some interrelated linear and nonlinear phenomena. In this study, it is proposed a self-contained model including non-linear air temperature effect producing thermal distortion in laser propagation. In order to better understand the underlying phenomena, a set of quantifiers are described leading to the characterization of the laser thermal distortion. A parametric study is finally proposed in order to highlight the influence of the different parameters of the simulations.

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