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Three-halves harmonic emission from a laser filament in a plasma channel

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4 Author(s)
Mishra, G. ; Dept. of Phys., Indian Inst. of Technol., New Delhi, India ; Talukdar, I. ; Vijayshri ; Tripathi, V.K.

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

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Plasma Science, IEEE Transactions on  (Volume:17 ,  Issue: 6 )