Spectral dependence of the photorefractive recording and erasure process in doped LiNbO3

1 January 1976

journal article
Published by Taylor & Francis in Ferroelectrics

Vol. 10 (1) , 159-162
https://doi.org/10.1080/00150197608241970

Abstract

Photocurrents responsible for the photorefractive recording sensitivity have been investigated in the absence and presence of external electrical fields in oxidized and partially reduced LiNbO₃: Fe- and LiNbO₃: Cu-crystals. Optical erasure and absorption have also been measured in the spectral range between 1.5 and 4.0 eV. The comparison of the spectra reveals the contributions of different centers and transitions to the photorefractive recording and erasure process and some details on the energy levels of transition metal centers in pyroelectric LiNbO₃.

Keywords

SPECTRAL DEPENDENCE
PHOTOREFRACTIVE RECORDING
ERASURE PROCESS
DOPED LINBO3

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