Crystallographic Independent Parametric In-stability Of Laser Beams In Material With Strain Dependent Constant By Doping Rh+4 in BaTiO3 Matrix [ READ ]
Shivani saxena, Sanjay Dixit, Sanjay Srivastava
In this present article, the parametric excitation of acoustic wave along the crystallographic direction in strain dependent dielectric constant of doped BaTiO3 matrix was analyzed by the hydrodynamic model of plasma. The coupled mode theory was used to calculate the threshold electric field and growth of acoustic wave along the certain direction of the crystallographic plane of the material. These analyses are investigated in electron- phonon collision dominated regime of the material. BaTiO3 itself show high dielectric constant due to temperature dependent crystallographic phase transformation. By introducing the dopant in the crystallographic plane, the resultant structure of BaTiO3 shows slightly modification in dielectric constant as well as stiffness of the material, which is responsible for changing the acoustic velocity in the different crystallographic plane. With the help numerical calculation, the anomalous growth can be obtained in high dielectric constant along the different crystallographic plane. But their results show no changing of parametric instability of laser beam along the crystallographic plane because of the retention of centrosymmetric structure in doped BaTiO3.
Shivani saxena, Sanjay Dixit, Sanjay Srivastava
In this present article, the parametric excitation of acoustic wave along the crystallographic direction in strain dependent dielectric constant of doped BaTiO3 matrix was analyzed by the hydrodynamic model of plasma. The coupled mode theory was used to calculate the threshold electric field and growth of acoustic wave along the certain direction of the crystallographic plane of the material. These analyses are investigated in electron- phonon collision dominated regime of the material. BaTiO3 itself show high dielectric constant due to temperature dependent crystallographic phase transformation. By introducing the dopant in the crystallographic plane, the resultant structure of BaTiO3 shows slightly modification in dielectric constant as well as stiffness of the material, which is responsible for changing the acoustic velocity in the different crystallographic plane. With the help numerical calculation, the anomalous growth can be obtained in high dielectric constant along the different crystallographic plane. But their results show no changing of parametric instability of laser beam along the crystallographic plane because of the retention of centrosymmetric structure in doped BaTiO3.
