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Reflected and transmitted second harmonics generation by an obliquely p-polarized laser pulse incident on vacuum-magnetized plasma interface

Published online by Cambridge University Press:  22 August 2017

M. Ghorbanalilu  and
Z. Heidari
M. Ghorbanalilu*
Affiliation:
Physics Department, Shahid Beheshti University, G. C., Tehran, Iran
Z. Heidari
Affiliation:
Physics Department of Azarbaijan Shahid Madani University, Tabriz, Iran
*
Address correspondence and reprint requests to: M. Ghorbanalilu, Physics Department, Shahid Beheshti University, Evin, Tehran, Iran. E-mail: m_alilu@sbu.ac.ir & mh_alilo@yahoo.com
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Abstract

The transmitted and reflected second harmonics (SH) generation by an oblique p-polarized laser pulse irradiated on vacuum-magnetized plasma interface is investigated. The laser pulse propagates through a homogenous, underdense, and transversely magnetized plasma. The transverse magnetic field plays the role of a self-generated magnetic field produced in laser plasma interaction. It is shown that if the transmitted and reflected SH components investigated as a simultaneous process, the maximum SH power deviates from previous reports specially near the critical angle. The deviation increases with laser field intensity and plasma density. The results reveal that the conversion efficiency increases slightly by increasing incident angle and drastically enhances near the critical angle. We show that the transmitted SH power decreases by increasing the magnetic field strength, in contrast to the normal incidence, which the SH power is increased. The comparison revealed that the SH efficiency is greater for transmitted component, while the reflected component is more proper for technical and experimental applications. This paper not only conforms the previous reports for angle far from the critical but also modifies them for the SH generation near the critical angle. Moreover, this paper gives a new insight for SH generation by a magnetized plasma.

Keywords

Harmonic generationLaser plasma interactionMagnetized plasma
Type
Research Article
Information
Laser and Particle Beams , Volume 35 , Issue 3 , September 2017 , pp. 551 - 560
Copyright
Copyright © Cambridge University Press 2017 

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