Abstract
Assuming that the origin of the nonlinear interaction lies in the second-order optical susceptibility χ (2) arising from the diffusion-induced nonlinear current density, and using straight-forward coupled mode theory, the parametric amplification is analytically investigated in a magnetized diffusive semiconductor plasma. The threshold value of the pump electric field E 0th is obtained which is found to decrease with rising magnetic field. We found minimum value of E 0th at wave number k=7.45×10 7 m −1 (say k m ). This k m is greatly influenced by carrier concentration and diffusion coefficient of the medium. The parametric gain constant is also obtained. It is found that gain maximizes at very low magnetic field (∼6 kG), which may drastically reduce the fabrication cost of parametric amplifier based on this interaction.
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