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Laser second-harmonic generation from an overdense plasma slab

Published online by Cambridge University Press:  16 May 2017

M. Kaur ,
P. C. Agarwal  and
S. Kaur
M. Kaur
Affiliation:
Department of Physics, Guru Nanak Dev University, Amritsar 143005, India
P. C. Agarwal
Affiliation:
Regional Institute of Education, Ajmer 305004, India
S. Kaur*
Affiliation:
Department of Physics, Guru Nanak Dev University, Amritsar 143005, India
*
Address correspondence and reprint requests to: S. Kaur, Department of Physics, Guru Nanak Dev University, Amritsar-143005, India. E-mail: sukhdeep.iitd@gmail.com
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Abstract

A s-polarized short-pulse laser impinged obliquely on an overdense plasma slab is shown to produce very significant second harmonic in the direction of specular reflection and transmission. The laser induces a non-linear current on electrons, which is curl free. However, with sharp plasma boundary, it gives rise to electromagnetic radiation at the second harmonic. Our formalism includes multiple reflections of the incident and second-harmonic waves from both the front and rear surfaces. The present work includes finiteness of the slab. The normalized second-harmonic amplitude acquires a sharp peak at some specific angle of incidence for a particular set of parameters dependent on thickness of the slab and plasma density.

Keywords

Laser–plasma interactionOblique incidenceOverdense plasma slabSecond-harmonic generation
Type
Research Article
Information
Laser and Particle Beams , Volume 35 , Issue 3 , September 2017 , pp. 379 - 385
Copyright
Copyright © Cambridge University Press 2017 

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