Stimulated raman scattering from plasma modes in magnetoactive semiconductors |
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Authors: | S Guha N Apte |
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Institution: | (1) Department of Physics, Ravishankar University, 492 010 Raipur, India;(2) Present address: School of Studies in Physics, Vikram University, 456 331 Ujjain, India |
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Abstract: | Stimulated scattering off electron plasma mode is investigated analytically for the case when the pump wave is an intense
circularly polarised electromagnetic wave propagating parallel to a homogeneous dc magnetic field in an isotropic semiconductor-plasma.
The threshold electric field of the pump necessary for the stimulated Raman scattering and the growth rate of the parametrically
unstable mode have been obtained for two cases (i)B
0=0 and (ii) B0 ≠ 0. It is seen that the magnetic field does not significantly affect the threshold electric field as well as the growth
rate provided the cyclotron frequency is small compared to the frequency of the pump wave. The threshold conditions are also
found to be insensitive to the electron thermal velocity. |
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Keywords: | Stimulated Raman scattering parametric instability piezoelectric semiconductor plasma modes |
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