scholarly journals Far-field scattering of a non-Gaussian off-axis axisymmetric laser beam by a spherical particle

1996 ◽  
Vol 35 (33) ◽  
pp. 6605 ◽  
Author(s):  
James A. Lock ◽  
Joseph T. Hodges
Keyword(s):  
Laser Beam ◽  
Spherical Particle ◽  
Far Field ◽  
Non Gaussian

Forward Scattering Signature of a Spherical Particle Crossing a Laser Beam out of the Beam Waist

1988 ◽  
Vol 5 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Jean-Philippe Chevaillier ◽  
Jean Fabre ◽  
Patrice Hamelin ◽  
Jean-Loup Lense
Keyword(s):  
Laser Beam ◽  
Spherical Particle ◽  
Beam Waist ◽  
Forward Scattering

Experimental Property Research of Far-Field Focusing of Laser Beam

2011 ◽  
Vol 38 (3) ◽  
pp. 0302005
Author(s):  
张合勇 Zhang Heyong ◽  
郭劲 Guo Jin ◽  
赵帅 Zhao Shuai ◽  
王挺峰 Wang Tingfeng ◽  
邵俊峰 Shao Junfeng
Keyword(s):  
Laser Beam ◽  
Far Field

Scattering Properties of Vectorial Far-Field Laguerre-Gaussian Beam by Single Spherical Particle

2018 ◽  
Vol 45 (6) ◽  
pp. 0605003
Author(s):  
徐强 Xu Qiang ◽  
李金刚 Li Jingang ◽  
王旭 Wang Xu ◽  
韩一平 Han Yiping ◽  
吴振森 Wu Zhensen
Keyword(s):  
Gaussian Beam ◽  
Spherical Particle ◽  
Far Field

scholarly journals Generalized Thermoelastic Functionally Graded on a Thin Slim Strip Non-Gaussian Laser Beam

Symmetry ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1094 ◽  
Author(s):  
Sayed M. Abo-Dahab ◽  
Ahmed E. Abouelregal ◽  
Marin Marin
Keyword(s):  
Laser Beam ◽  
Pulse Length ◽  
Generalized Thermoelasticity ◽  
Functionally Graded ◽  
Strong Impact ◽  
Problem Solution ◽  
Gaussian Laser Beam ◽  
Laser Parameters ◽  
Non Gaussian ◽  
The Impact

The present study utilizes the generalized thermoelasticity theory, with one thermal relaxation time (TR), to examine the thermoelastic problem of a functionally graded thin slim strip (TSS). The authors heated the plane surface bounding using a non-Gaussian laser beam with a pulse length of 2 ps. The material characteristics varied continually based on exponential functions. Moreover, the equations governing the generalized thermoelasticity for a functionally graded material (FGM) are recognized. The problem’s ideal solution was primarily obtained in the Laplace transform (LT) space. The LTs were converted numerically because of the considerable importance of the response in the transient state. For a hypothetical substance, the numerical procedures calculating the displacement, stress, temperature and strain were given. The analogous problem solution to an isotropic homogeneous material was provided by defining the parameter of non-homogeneity adequately. The obtained results were displayed using graphs to illustrate the extent to which non-homogeneity affected displacement, stress, temperature and strain. A comparison was been made between the present study and those previously obtained by others, when the new parameters vanish to show the impact of the non-homogeneity, TSS and laser parameters on the phenomenon. The results obtained indicate a significant strong impact of FGM, TSS and laser parameters.

INVESTIGATION OF PECULIARITIES OF LIGHT SCATTERING BY NANOSTRUCTURAL CHANGES IN THE CRYSTAL LATTICE OF FERROELECTRIC BARIUM SODIUM NIOBATE CRYSTAL

2004 ◽  
Vol 03 (06) ◽  
pp. 815-818 ◽  
Author(s):  
S. V. IVANOVA
Keyword(s):  
Light Scattering ◽  
Laser Beam ◽  
Beam Width ◽  
Far Field ◽  
Sodium Niobate ◽  
Incident Laser Beam ◽  
Incident Laser ◽  
Elastic Light Scattering ◽  
Temperature Range ◽  
Thermal Changes

Thermal changes of light scattering images in the far-field were observed under steady illumination by an incident laser beam of finite beam width on barium sodium niobate crystals in the temperature range of 20–500°C. Different patterns of light scattering in far-field were observed — from striped to round-like form with dependence on temperature, conditions of grown, direction of beam and polarization. The round-like form was observed on cooling from 450°C to 240°C. Striped forms of light scattering were observed below 200°C. Correlation of the behavior of elastic light scattering was observed in this temperature range.

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