Js. Liu et al., ANOMALIES OF DOPED-LINBO3 CRYSTAL IN PHOTOREFRACTIVE PHASE-CONJUGATION WITH RELATION TO STRUCTURAL PHASE-TRANSFORMATION, Chinese Physics Letters, 13(2), 1996, pp. 137-140
We investigate the photorefractive phase conjugation in a Ce:Fe:LiNbO3
crystal as a function of temperature (293-393 K) and find the phase c
onjugate reflectivity increases sharply in the vicinity of 55. 70 and
110 degrees C. The anomalous phenomenon is possibly concerned with the
structural phase transformation of a crystal. which induces an extra
internal electric held to influence the phase conjugation. The value o
f the field is estimated at the order of 10(5) V/m, in agreement with
the published data.