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 λ = 1.32 µm 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 λ = 1.06 µm, 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.
© 1994 Optical Society of America
C. Özkul, S. Jamet, P. Gravey, K. Turki, and G. Bremond, "Photorefractive effect in InP:Fe dominated by holes at room temperature: influence of the indirect transitions," J. Opt. Soc. Am. B 11, 1668-1673 (1994)