PHOTOREFRACTIVE EFFECT IN INP-FE DOMINATED BY HOLES AT ROOM-TEMPERATURE - INFLUENCE OF THE INDIRECT TRANSITIONS


OZKUL C., JAMET S., GRAVEY P., TURKI K., BREMOND G.

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, vol.11, no.9, pp.1668-1673, 1994 (SCI-Expanded) identifier identifier

Abstract

Iron-ion concentrations have been determined from measurements of the photoinduced-grating erasure times. We checked the accuracy of this method by performing two-wave mixing experiments at lambda = 1.32 mum without an applied field. After verifying the fit of the extended single-defect model with indirect transitions and the two-wave mixing gain data at lambda = 1.06 mum, we conclude that the indirect transitions involving the excited state of Fe2+ can induce a reduction of the photorefractive effect in InP:Fe when the dominant photocarriers are holes at room temperature.