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Title: Kinetic study of terahertz generation based on the interaction of two-color ultra-short laser pulses with molecular hydrogen gas

Abstract

In this work, using a two dimensional particle in cell-Monte Carlo collision simulation scheme, interaction of two-color ultra-short laser pulses with the molecular hydrogen gas (H{sub 2}) is examined. The operational laser parameters, i.e., its pulse shape, duration, and waist, are changed and, their effects on the density and kinetic energy of generated electrons, THz electric field, intensity, and spectrum are studied. It is seen that the best pulse shape generating the THz signal radiation with the highest intensity is a trapezoidal pulse, and the intensity of generated THz radiation is increased at the higher pulse durations and waists. For all the operational laser parameters, the maximum value of emitted THz signal frequency always remains lower than 5 THz. The intensity of applied laser pulses is taken about 10{sup 14} w/cm{sup 2}, and it is observed that while a small portion of the gaseous media gets ionized, the radiated THz signal is significant.

Authors:
;  [1];  [2]
  1. Photonics Research Institute, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman (Iran, Islamic Republic of)
  2. Faculty of Physics, Shahid Bahonar University of Kerman, Kerman (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22600129
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COLLISIONS; COLOR; COMPUTERIZED SIMULATION; DENSITY; ELECTRIC FIELDS; ELECTRONS; HYDROGEN; INTERACTIONS; KINETIC ENERGY; LASERS; MONTE CARLO METHOD; PULSE SHAPERS; PULSES; SIGNALS; TWO-DIMENSIONAL CALCULATIONS

Citation Formats

Soltani Gishini, M. S., Ganjovi, A., E-mail: Ganjovi@kgut.ac.ir, and Saeed, M.. Kinetic study of terahertz generation based on the interaction of two-color ultra-short laser pulses with molecular hydrogen gas. United States: N. p., 2016. Web. doi:10.1063/1.4951019.
Soltani Gishini, M. S., Ganjovi, A., E-mail: Ganjovi@kgut.ac.ir, & Saeed, M.. Kinetic study of terahertz generation based on the interaction of two-color ultra-short laser pulses with molecular hydrogen gas. United States. doi:10.1063/1.4951019.
Soltani Gishini, M. S., Ganjovi, A., E-mail: Ganjovi@kgut.ac.ir, and Saeed, M.. 2016. "Kinetic study of terahertz generation based on the interaction of two-color ultra-short laser pulses with molecular hydrogen gas". United States. doi:10.1063/1.4951019.
@article{osti_22600129,
title = {Kinetic study of terahertz generation based on the interaction of two-color ultra-short laser pulses with molecular hydrogen gas},
author = {Soltani Gishini, M. S. and Ganjovi, A., E-mail: Ganjovi@kgut.ac.ir and Saeed, M.},
abstractNote = {In this work, using a two dimensional particle in cell-Monte Carlo collision simulation scheme, interaction of two-color ultra-short laser pulses with the molecular hydrogen gas (H{sub 2}) is examined. The operational laser parameters, i.e., its pulse shape, duration, and waist, are changed and, their effects on the density and kinetic energy of generated electrons, THz electric field, intensity, and spectrum are studied. It is seen that the best pulse shape generating the THz signal radiation with the highest intensity is a trapezoidal pulse, and the intensity of generated THz radiation is increased at the higher pulse durations and waists. For all the operational laser parameters, the maximum value of emitted THz signal frequency always remains lower than 5 THz. The intensity of applied laser pulses is taken about 10{sup 14} w/cm{sup 2}, and it is observed that while a small portion of the gaseous media gets ionized, the radiated THz signal is significant.},
doi = {10.1063/1.4951019},
journal = {Physics of Plasmas},
number = 6,
volume = 23,
place = {United States},
year = 2016,
month = 6
}
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