Speaker
Mr
Sanjeev Kumar
(Lovely Professional University, Phagwara, Punjab, India)
Description
The phenomenon of stimulated Raman scattering (S.R.S) of intense self focused Cosh-Gaussian (ChG) laser beams in underdense plasma targets modeled by a ramp shaped different density profiles, has been investigated. An intense laser beam with frequency ω0 propagating through plasma gets coupled with a pre-existing electron plasma wave (EPW) at frequency ωep and produces a back scattered wave at frequency ωs=ω0-ωep. Semi analytical solution of the set of coupled wave equations (pump, EPW and scattered wave) has been obtained under W.K.B. approximation by using variational theory. It has been observed that S.R.S reflectivity of plasma is significantly affected under the effect of slope of density ramp.
| Topics | Session B. Laser physics and modern optoelectronics |
|---|---|
| Contact Email address | skpanwar82@gmail.com |
Primary authors
Mr
Sanjeev Kumar
(Lovely Professional University, Phagwara, Punjab, India)
Naveen Gupta
(Lovely Ptofessional University Phagwara)
S B Bhardwaj
(SUS Govt College, Matak Marji, Indri, Karnal)
