Similarity of angular distribution for THz radiation emitted by laser filament plasma channels of different lengths

The influence of plasma channel length on an angular terahertz (THz) radiation distribution is experimentally studied for the channel formed under filamentation of an ultrashort laser pulse. It is shown that the angular distribution of the THz emission depends only on laser intensity in the filament...

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Published in:Optics letters 2020-07, Vol.45 (14), p.4009-4011
Main Authors: Koribut, Andrey V., Rizaev, Georgy E., Mokrousova, Daria V., Savinov, Sergey A., Reutov, Aleksei A., Mityagin, Yury A., Seleznev, Leonid V., Ionin, Andrey A.
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Language:English
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Angular distribution
Emission
Lasers
Plasma
Plasma density
Radiation distribution
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creator Koribut, Andrey V.
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description The influence of plasma channel length on an angular terahertz (THz) radiation distribution is experimentally studied for the channel formed under filamentation of an ultrashort laser pulse. It is shown that the angular distribution of the THz emission depends only on laser intensity in the filament and plasma density of the plasma channel and does not depend on the plasma channel length. A qualitative explanation of the THz emission screening by the filament plasma channel is proposed.
doi_str_mv 10.1364/OL.394377
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subjects Angular distribution
Emission
Lasers
Plasma
Plasma density
Radiation distribution
title Similarity of angular distribution for THz radiation emitted by laser filament plasma channels of different lengths
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