Title :
Two-wave mixing with externally applied magnetic field and Faraday effect on photorefractive medium
Author :
Johansen, Per Michael B
Author_Institution :
Dept. of Opt. & Fluid Dynamics, Riso Nat. Lab., Roskilde, Denmark
fDate :
8/1/1994 12:00:00 AM
Abstract :
The two-wave mixing formalism for photorefractive beam coupling is extended to include the effects of an external magnetic field via the introduction of the Faraday effect. Moreover, the magnetic-field effects on the perturbed permittivity are also included in the analysis given here. It is concluded that the presence of a static magnetic field causes oscillations in the coupling between the two incident fields, and that such an effect is severe in materials of diluted magnetic semiconductors as was measured experimentally only recently. Numerical results are given for BSO and for CdMnTe, where the first material in addition to the Faraday effect exhibits optical activity, whereas the second material does not
Keywords :
Faraday effect; bismuth compounds; cadmium compounds; multiwave mixing; optical rotation; permittivity; photorefractive materials; BSO; Bi12SiO20; CdMnTe; Faraday effect; diluted magnetic semiconductors; external magnetic field; externally applied magnetic field; incident fields; magnetic-field effects; optical activity; oscillations; perturbed permittivity; photorefractive beam coupling; photorefractive medium; static magnetic field; two-wave mixing; two-wave mixing formalism; Faraday effect; Magnetic field measurement; Magnetic fields; Magnetic materials; Magnetic semiconductors; Optical coupling; Optical materials; Permittivity; Photorefractive effect; Semiconductor materials;
Journal_Title :
Quantum Electronics, IEEE Journal of
