New Approach to THz Pulse Generation in Plasma Created by High-Intensity Laser Field

We propose new approach to the problem of generation of terahertz radiation in nonequilibrium plasma channels created by high-intensity laser radiation in gases. Key idea of the proposed approach lies in implementing additional amplification to the laser-induced generated THz pulse due to the specif...

Full description

Saved in:
Bibliographic Details
Main Authors: Bogatskaya, Anna V., Volkova, Ekaterina A., Popov, Alexander. M.
Format: Conference Proceeding
Language:English
Subjects:
Bars
Gas lasers
Laser theory
Plasma properties
Xenon
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We propose new approach to the problem of generation of terahertz radiation in nonequilibrium plasma channels created by high-intensity laser radiation in gases. Key idea of the proposed approach lies in implementing additional amplification to the laser-induced generated THz pulse due to the specific properties of nonequilibrium plasma channel. We perform a self-consistent analysis of the processes of terahertz pulse formation by four-wave mixing process as well as by relaxation of residual low-frequency currents and it further propagation and amplification in a nonequilibrium plasma medium in a wakefield of the laser pulse. Optimal parameters for the pump laser pulse and gaseous medium are found for the most efficient conversion of its energy into terahertz pulse.
ISSN:2162-2035
DOI:10.1109/IRMMW-THz.2019.8873873