1.
Opt Lett
; 45(14): 4009-4011, 2020 Jul 15.
Article
in English
| MEDLINE
| ID: mdl-32667341
ABSTRACT
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.