Coupled mode propagation in the presence of internal waves

1998 ◽  
Vol 104 (3) ◽  
pp. 1766-1766
Author(s):  
Ahmad T. Abawi ◽  
W. A. Kuperman
Keyword(s):  
Internal Waves ◽  
Mode Propagation ◽  
Coupled Mode

Coupled Mode Propagation in Elastic Media

2007 ◽  
Author(s):  
Ahmad T. Abawi ◽  
Michael B. Porter
Keyword(s):  
Elastic Media ◽  
Mode Propagation ◽  
Coupled Mode

Forward coupled‐mode propagation modeling for coastal acoustic tomography

1996 ◽  
Vol 99 (2) ◽  
pp. 793-802 ◽  
Author(s):  
Ching‐Sang Chiu ◽  
James H. Miller ◽  
James F. Lynch
Keyword(s):  
Acoustic Tomography ◽  
Mode Propagation ◽  
Propagation Modeling ◽  
Coupled Mode

scholarly journals Coaxial propagation of Laguerre–Gaussian (LG) and Gaussian beams in a plasma

2015 ◽  
Vol 33 (1) ◽  
pp. 123-133 ◽  
Author(s):  
Shikha Misra ◽  
Sanjay K. Mishra ◽  
P. Brijesh
Keyword(s):  
Beam Width ◽  
Phase Evolution ◽  
Spot Size ◽  
Spatial Soliton ◽  
Gaussian Beams ◽  
Mode Propagation ◽  
Intensity Maximum ◽  
Coupled Mode ◽  
Non Linear ◽  
Gaussian Mode

AbstractThis paper investigates the non-linear coaxial (or coupled mode) propagation of Laguerre–Gaussian (LG) (in particular L01 mode) and Gaussian electromagnetic (em) beams in a homogeneous plasma characterized by ponderomotive and relativistic non-linearities. The formulation is based on numerical solution of non-linear Schrödinger wave equation under Jeffreys–Wentzel–Kramers–Brillouin approximation, followed by paraxial approach applicable in the vicinity of intensity maximum of the beams. A set of coupled differential equations for spot size (beam width) and phase evolution with space corresponding to coupled mode has been derived and numerically solved to determine the propagation dynamics. Using focusing equation a critical condition describing the self-trapped (i.e., spatial soliton) mode of laser beam propagation in the plasma has been discussed; as a consequence oscillatory focusing/defocusing of the beams in coupled mode propagation have been analyzed and presented graphically. As an important outcome, significant enhancement in the intensity of LG beam is noticed when it is coupled with the Gaussian mode.

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