Deceleration of a continuous-wave (CW) molecular beam with a single quasi-CW semi-Gaussian laser beam

2008 ◽  
Vol 17 (10) ◽  
pp. 3672-3677 ◽  
Author(s):  
Yin Ya-Ling ◽  
Xia Yong ◽  
Yin Jian-Ping
Keyword(s):  
Laser Beam ◽  
Molecular Beam ◽  
Continuous Wave ◽  
Gaussian Laser Beam

Evaporative Cutting of a Semitransparent Body With a Moving CW Laser

1988 ◽  
Vol 110 (4a) ◽  
pp. 924-930 ◽  
Author(s):  
H. Abakians ◽  
M. F. Modest
Keyword(s):  
Laser Beam ◽  
Integral Method ◽  
Continuous Wave ◽  
Nonlinear Partial Differential Equations ◽  
Groove Depth ◽  
Surface Heat ◽  
Heat Losses ◽  
Gaussian Laser Beam ◽  
Cw Laser ◽  
Partial Evaporation

The formation of a groove by partial evaporation of a moving semi-infinite and semitransparent solid is considered. Evaporative removal of material is achieved by focusing a high-power, highly concentrated Gaussian laser beam of continuous wave (CW) onto the surface of the solid. Surface heat losses due to radiation and convection are assumed to be negligible, and conductive 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.

Self-focusing of cosh-Gaussian laser beam in collisional plasma: effect of nonlinear absorption

2021 ◽  
Author(s):  
Naveen Gupta ◽  
Sandeep Kumar ◽  
A Gnaneshwaran ◽  
Sanjeev Kumar ◽  
Suman Choudhry
Keyword(s):  
Laser Beam ◽  
Nonlinear Absorption ◽  
Collisional Plasma ◽  
Gaussian Laser Beam ◽  
Self Focusing ◽  
Plasma Effect

A model of Gaussian laser beam self-trapping in optical tweezers for nonlinear particles

2021 ◽  
Vol 53 (8) ◽  
Author(s):  
Quy Ho Quang ◽  
Thanh Thai Doan ◽  
Kien Bui Xuan ◽  
Thang Nguyen Manh
Keyword(s):  
Laser Beam ◽  
Optical Tweezers ◽  
Gaussian Laser Beam ◽  
Self Trapping

Propagation of circularly polarized quadruple Gaussian laser beam in magnetoplasma

Optik ◽  
2015 ◽  
Vol 126 (24) ◽  
pp. 5710-5714 ◽  
Author(s):  
Munish Aggarwal ◽  
Shivani Vij ◽  
Niti Kant
Keyword(s):  
Laser Beam ◽  
Gaussian Laser Beam ◽  
Circularly Polarized

Photobleaching of a solid photochromic medium by a Gaussian laser beam

2002 ◽  
Vol 41 (15) ◽  
pp. 2907 ◽  
Author(s):  
Serge Caron ◽  
Roger A. Lessard ◽  
Pierre C. Roberge
Keyword(s):  
Laser Beam ◽  
Gaussian Laser Beam

Relativistic self-focusing of a rippled laser beam in a plasma

1999 ◽  
Vol 62 (4) ◽  
pp. 389-396 ◽  
Author(s):  
M. V. ASTHANA ◽  
A. GIULIETTI ◽  
DINESH VARSHNEY ◽  
M. S. SODHA
Keyword(s):  
Refractive Index ◽  
Laser Beam ◽  
The Self ◽  
Laser Beams ◽  
Radial Dependence ◽  
Main Beam ◽  
Gaussian Laser Beam ◽  
Self Focusing ◽  
Saturation Effects ◽  
Paraxial Ray

This paper presents an analysis of the relativistic self-focusing of a rippled Gaussian laser beam in a plasma. Considering the nonlinearity as arising owing to relativistic variation of mass, and following the WKB and paraxial-ray approximations, the phenomenon of self-focusing of rippled laser beams is studied for arbitrary magnitude of nonlinearity. Pandey et al. [Phys. Fluids82, 1221 (1990)] have shown that a small ripple on the axis of the main beam grows very rapidly with distance of propagation as compared with the self-focusing of the main beam. Based on this analogy, we have analysed relativistic self-focusing of rippled beams in plasmas. The relativistic intensities with saturation effects of nonlinearity allow the nonlinear refractive index in the paraxial regime to have a slower radial dependence, and thus the ripple extracts relatively less energy from its neighbourhood.

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