Parametric conversion of an electron plasma wave into circularly polarised electromagnetic waves in longitudinally magnetized n-type semiconductors with high dielectric constant

The interesting nonlinear process of parametric conversion of a high frequency electrostatic wave into electromagnetic wave is investigated analytically for n-type semiconductor with high dielectric constant, to which a dc magnetic field is applied along the wave propagation direction. A general dispersion relation is obtained and solved for both the senses of rotation of excited electromagnetic waves to study the threshold condition and growth rates of the unstable modes. (author). 24 refs., 4 figs