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Successive uptapering and stationary self-trapped propagation of a laser beam in a saturating nonlinear medium

Published online by Cambridge University Press:  09 March 2009

Sarang Medhekar ,
Rajkamal  and
S. Konar
Sarang Medhekar
Affiliation:
Institute of Computer Science, Electronics and Instrumentation, Devi Ahilya University Khandwa Road, Indore 452001, India
Rajkamal
Affiliation:
Institute of Computer Science, Electronics and Instrumentation, Devi Ahilya University Khandwa Road, Indore 452001, India
S. Konar
Affiliation:
School of Energy Studies, Devi Ahilya University, Khandwa Road, Indore 452001, India
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Abstract

A steady-state analysis of Gaussian laser beam in a nonlinear medium has been presented. It is shown that an oscillatory self-guided beam (whose width is oscillating with the propagation distance) in a saturable nonlinear medium can be uptapered by material gain. Moreover, the present investigation suggests that under certain conditions it is possible to obtain a stationary self-guided beam (planar wavefront) in a nonabsorbing medium from an initially oscillatory (nonplanar wavefront) beam in a nonabsorbing medium by uptapering it in a gain medium.

Type
Regular Papers
Information
Laser and Particle Beams , Volume 13 , Issue 4 , December 1995 , pp. 559 - 567
Copyright
Copyright © Cambridge University Press 1995

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