Title :
Three-halves harmonic emission from a laser filament in a plasma channel
Author :
Mishra, Ganeswar ; Talukdar, Indranil ; Vijayshri ; Tripathi, V.K.
Author_Institution :
Dept. of Phys., Indian Inst. of Technol., New Delhi, India
fDate :
12/1/1989 12:00:00 AM
Abstract :
A self-trapped laser filament is susceptible to decay-producing radially localized Langmuir waves. A nonlinear interaction of the pump wave with the density oscillation at the Langmuir frequency gives rise to three-halves harmonic emissions. Using a basis-function expansion technique, the emitted power in the backward direction is obtained. It decreases with the increasing size of the filament
Keywords :
plasma instability; plasma production and heating by laser beam; plasma waves; Langmuir frequency; backward direction; basis-function expansion technique; density oscillation; emitted power; nonlinear interaction; plasma channel; pump wave; radially localized Langmuir waves; self-trapped laser filament; three-halves harmonic emissions; Current density; Electrons; Frequency; Global warming; Optical propagation; Particle beams; Plasma density; Plasma waves; Pump lasers; Waveguide lasers;
Journal_Title :
Plasma Science, IEEE Transactions on
