Enhancement of thermal blooming effect on free space propagation of high power CW laser beam

2018 ◽  
Author(s):  
Samy A. Ghoniemy ◽  
Tamer M. Kashif ◽  
Ayman M. Mokhtar
Keyword(s):  
Laser Beam ◽  
High Power ◽  
Free Space ◽  
Blooming Effect ◽  
Thermal Blooming ◽  
Cw Laser

Thermal Blooming Effect of Flat-Topped Laser Beam Array Propagating Through Atmosphere

2019 ◽  
Vol 39 (1) ◽  
pp. 0126020
Author(s):  
李晓庆 Li Xiaoqing ◽  
曹建勇 Cao Jianyong ◽  
丁洲林 Ding Zhoulin ◽  
季小玲 Ji Xiaoling
Keyword(s):  
Laser Beam ◽  
Blooming Effect ◽  
Beam Array ◽  
Thermal Blooming

Modulation property of the high-power broadband laser beam propagation in free space

2005 ◽  
Author(s):  
Kaiming You ◽  
Shuangchun Wen ◽  
Dajun Lei ◽  
Hua Yang ◽  
Xiquan Fu
Keyword(s):  
Laser Beam ◽  
High Power ◽  
Free Space ◽  
Beam Propagation ◽  
Laser Beam Propagation ◽  
Broadband Laser

Evaporative Cutting of a Semi-infinite Body With a Moving CW Laser

1986 ◽  
Vol 108 (3) ◽  
pp. 602-607 ◽  
Author(s):  
M. F. Modest ◽  
H. Abakians
Keyword(s):  
Partial Differential Equations ◽  
Laser Beam ◽  
High Power ◽  
Integral Method ◽  
Nonlinear Partial Differential Equations ◽  
Groove Depth ◽  
Gaussian Laser Beam ◽  
Infinite Body ◽  
Cw Laser ◽  
Deep Groove

The formation of a deep groove by evaporation on a moving semi-infinite solid is considered. Evaporative removal of material is achieved by focusing a high-power, highly concentrated Gaussian laser beam of constant wattage (CW laser) onto the surface of the solid. Assuming thermal losses due to conduction and convection to be relatively minor, these losses are treated in an approximate fashion using a simple integral method. The relevant nonlinear partial differential equations are solved numerically, and results for groove depth and shape are presented for a variety of laser and solid parameters.

The Effect of Atmosphere Disturbances on Laser Beam Propagation

2012 ◽  
Vol 500 ◽  
pp. 3-8 ◽  
Author(s):  
Seyed Hamid Hashemipour ◽  
A. Salman Ogli ◽  
Nasim Mohammadian
Keyword(s):  
Laser Beam ◽  
Average Intensity ◽  
Beam Diameter ◽  
Propagation Characteristics ◽  
Laser Beam Diameter ◽  
Blooming Effect ◽  
Thermal Blooming ◽  
Propagation Axis ◽  
Video Format ◽  
Peak Value

In this article, we probe the atmosphere disturbance such as Attenuation, Scattering, turbulence and thermal blooming on the laser beam propagated it. For investigating, we designed software which gives the vertically propagation characteristics of a general-type beam in atmosphere, based on the Huygens–Fresnel principle. When the required source and medium parameters are entered, the simulator yields the average intensity profile along the propagation axis in a video format. The results show that the peak value of the average intensity can be astonishingly affected by atmospheric turbulence, thermal blooming effect (for typical high power lasers) and the laser beam diameter.

Cutting of steels by high-power CO laser beam

1988 ◽  
Author(s):  
Shunich Sato ◽  
Kunimitsu Takahashi ◽  
Hideaki Saito ◽  
Masato Sugimoto ◽  
Tomoo Fujioka ◽  
...  
Keyword(s):  
Laser Beam ◽  
High Power ◽  
Co Laser
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