Modulational Instability of laser beam in Ferroelectric Material with Strain Dependent Dielectric Constant |
Author(s): |
| Moolchandra Rajpoot , Govt. Motilal Vigyan Mahavidyalaya Bhopal (M.P.) India 462008 ; Sanjay Dixit , Govt. Motilal Vigyan Mahavidyalaya Bhopal (M.P.) India 462008 ; Asif jehan, Govt. Motilal Vigyan Mahavidyalaya Bhopal (M.P.) India 462008 |
Keywords: |
| Hydrodynamic Model, Strain Dependent Dielectric Constant (SDDC),coupled mode theory (CMT), Raman Scattering (RS), Modulational Instability (MI) |
Abstract |
|
The effect is considered of relativistic mass variation of the electron and a large transverse magneto-static field on the modulational instability of a laser beam and consequent amplification of acoustic waves. The analysis is based on the hydrodynamic model of plasma in the collision dominated regime. Using coupled mode theory the modulational instability in the medium is investigated and the threshold value of the pump electric field and the conditions of the initial growth rates of unstable acoustic waves are deduced. It is found that the condition of instability gets modified due to the presence of the relativistic mass variation, in ferroelectric material in which dependence of dielectric constant on strain of material is considered. Numerical estimations are made for BaTiO3.. |
Other Details |
|
Paper ID: IJSRDV4I10430 Published in: Volume : 4, Issue : 1 Publication Date: 01/04/2016 Page(s): 521-524 |
Article Preview |
|
|
|
|
