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Title: Emission of terahertz waves in the interaction of a laser pulse with clusters

Abstract

A theory of generation of terahertz radiation in the interaction of a femtosecond laser pulse with a spherical cluster is developed for the case in which the density of free electrons in the cluster plasma exceeds the critical value. The spectral, angular, and energy characteristics of the emitted terahertz radiation are investigated, as well as its spatiotemporal structure. It is shown that the directional pattern of radiation has a quadrupole structure and that the emission spectrum has a broad maximum at a frequency nearly equal to the reciprocal of the laser pulse duration. It is found that the total radiated energy depends strongly on the cluster size. Analysis of the spatiotemporal profile of the terahertz signal shows that it has a femtosecond duration and contains only two oscillation cycles.

Authors:
 [1]
  1. Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)
Publication Date:
OSTI Identifier:
22614111
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 42; Journal Issue: 7; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRON DENSITY; ELECTRONS; EMISSION SPECTRA; LASER RADIATION; OSCILLATIONS; PLASMA; PULSES; QUADRUPOLES; SHORT WAVE RADIATION; SPHERICAL CONFIGURATION; THZ RANGE; WAVE PROPAGATION

Citation Formats

Frolov, A. A., E-mail: frolov@ihed.ras.ru. Emission of terahertz waves in the interaction of a laser pulse with clusters. United States: N. p., 2016. Web. doi:10.1134/S1063780X16070035.
Frolov, A. A., E-mail: frolov@ihed.ras.ru. Emission of terahertz waves in the interaction of a laser pulse with clusters. United States. doi:10.1134/S1063780X16070035.
Frolov, A. A., E-mail: frolov@ihed.ras.ru. Fri . "Emission of terahertz waves in the interaction of a laser pulse with clusters". United States. doi:10.1134/S1063780X16070035.
@article{osti_22614111,
title = {Emission of terahertz waves in the interaction of a laser pulse with clusters},
author = {Frolov, A. A., E-mail: frolov@ihed.ras.ru},
abstractNote = {A theory of generation of terahertz radiation in the interaction of a femtosecond laser pulse with a spherical cluster is developed for the case in which the density of free electrons in the cluster plasma exceeds the critical value. The spectral, angular, and energy characteristics of the emitted terahertz radiation are investigated, as well as its spatiotemporal structure. It is shown that the directional pattern of radiation has a quadrupole structure and that the emission spectrum has a broad maximum at a frequency nearly equal to the reciprocal of the laser pulse duration. It is found that the total radiated energy depends strongly on the cluster size. Analysis of the spatiotemporal profile of the terahertz signal shows that it has a femtosecond duration and contains only two oscillation cycles.},
doi = {10.1134/S1063780X16070035},
journal = {Plasma Physics Reports},
number = 7,
volume = 42,
place = {United States},
year = {Fri Jul 15 00:00:00 EDT 2016},
month = {Fri Jul 15 00:00:00 EDT 2016}
}