1975•Applied Physics LettersRequires access

Spectroscopic investigation of the photorefractive recording and erasure process in LiNbO3 : Fe

H. Kurz, Eckhard Krätzig

Abstract

Photoinduced currents responsible for the photorefractive process in reduced and oxidized LiNbO3 : Fe crystals have been investigated in the spectral range between 1.5 and 4.0 eV. Optical erasure has also been studied by measuring the decay of a photoinduced phase grating during illumination with incoherent light. In comparison to optical absorption these spectra yield information on energy levels of photorefractive centers.

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Key concepts: Photorefractive effect, Erasure, Materials science, Grating, Optoelectronics, Absorption (acoustics), Optical storage, Optics