Numerical analysis of photorefractive InP: Fe at large fringe contrast
N Wolffer, P Gravey, R Coquillé - Journal of applied physics, 1995 - pubs.aip.org
A finite difference method is used to analyze the behavior of photorefractive InP: Fe at high
fringe contrast under externally apphed field. The evolution with increasing fringe contrast m
of the electron-hole resonance, which occurs in the presence of a continuous field, is
studied. As m increases, the field tends to concentrate in a small zone and reaches very
large local values. On the other hand, the resonance loses height and widens. For
illuminations closed to the resonance, the two-wave mixing gain presents the usual aspect …
fringe contrast under externally apphed field. The evolution with increasing fringe contrast m
of the electron-hole resonance, which occurs in the presence of a continuous field, is
studied. As m increases, the field tends to concentrate in a small zone and reaches very
large local values. On the other hand, the resonance loses height and widens. For
illuminations closed to the resonance, the two-wave mixing gain presents the usual aspect …