Comparison Of Uniform And Gaussian Beam Diffraction

1986 ◽  
Author(s):  
Virendra N. Mahajan
Keyword(s):  
Gaussian Beam ◽  
Beam Diffraction

scholarly journals Gaussian beam diffraction in inhomogeneous and logarithmically saturable nonlinear media

Open Physics ◽  
2012 ◽  
Vol 10 (4) ◽  
Author(s):  
Pawel Berczynski
Keyword(s):  
Gaussian Beam ◽  
Wave Front ◽  
Analytical Methods ◽  
Cylindrical Symmetry ◽  
Nonlinear Media ◽  
First Order ◽  
Self Focusing ◽  
Complex Curvature ◽  
Numerical And Analytical Methods ◽  
Beam Diffraction

AbstractThe method of paraxial complex geometrical optics (PCGO) is presented, which describes Gaussian beam (GB) diffraction and self-focusing in smoothly inhomogeneous and nonlinear saturable media of cylindrical symmetry. PCGO reduces the problem of Gaussian beam diffraction in nonlinear and inhomogeneous media to the system of the first order ordinary differential equations for the complex curvature of the wave front and for GB amplitude, which can be readily solved both analytically and numerically. As a result, PCGO radically simplifies the description of Gaussian beam diffraction in inhomogeneous and nonlinear media as compared to the numerical and analytical methods of nonlinear optics. The power of PCGO method is presented on the example of Gaussian beam evolution in logarithmically saturable medium with either focusing and defocusing refractive profile. Besides, the influence of initial curvature of the wave front on GB evolution in nonlinear saturable medium is discussed in this paper.

Quality assessment of quasi-phase-matched gratings by Gaussian beam diffraction

2015 ◽  
Author(s):  
Prashant Povel Dwivedi ◽  
Ch. S. S Pavan Kumar ◽  
Hee Joo Choi ◽  
Myoungsik Cha
Keyword(s):  
Quality Assessment ◽  
Gaussian Beam ◽  
Beam Diffraction

Gaussian beam diffraction in weakly anisotropic inhomogeneous media

2009 ◽  
Vol 373 (33) ◽  
pp. 2979-2983 ◽  
Author(s):  
Yu.A. Kravtsov ◽  
P. Berczynski ◽  
B. Bieg
Keyword(s):  
Gaussian Beam ◽  
Inhomogeneous Media ◽  
Beam Diffraction

scholarly journals Gaussian beam diffraction in free space

2013 ◽  
Vol 5 (1) ◽  
Author(s):  
Paweł Berczynski ◽  
Yury Kravtsov
Keyword(s):  
Gaussian Beam ◽  
Free Space ◽  
Beam Diffraction

Gaussian beam diffraction by a quasi-optical grating for coupling to lower-hybrid plasma waves

1995 ◽  
Vol 16 (6) ◽  
pp. 1009-1024 ◽  
Author(s):  
F. Frezza ◽  
G. Gerosa ◽  
F. Gori ◽  
M. Santarsiero ◽  
F. Santini ◽  
...  
Keyword(s):  
Gaussian Beam ◽  
Plasma Waves ◽  
Lower Hybrid ◽  
Optical Grating ◽  
Hybrid Plasma ◽  
Beam Diffraction
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