Optical properties of ferromagnetic semiconductors with laser induced surface gratings
Анотація
This article introduces the basic physical concepts of laser radiation influences on physical properties of ferromagnetic semiconductors (FMSC). A system of transport equations is derived to describe the electron-magnon system in a FMSC illuminated with several coherent light beams (CLB) along with a static heating electric field. It is shown that interference of CLB in FMSC has the effect that several parameters of nonequilibrium electrons and magnons exhibit superlattice behavior. The depth of modulation of the parameters describing superlattices is estimated. Propagation and diffraction of an additional electromagnetic wave in a FMSC with a gratings induced by CLB is considered. The light reflection coefficient and the refractive index of FMSC with laser induced gratings are calculated.
Посилання
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