论文信息 - Fixing of a photorefractive grating in KTa(1-x)Nb(x)O(3) by cooling through the ferroelectric phase transition.

Fixing of a photorefractive grating in KTa(1-x)Nb(x)O(3) by cooling through the ferroelectric phase transition.

We report the fixing of a photorefractive grating in KTa(1-x)Nb(x)O(3). The procedure involves the writing of a photorefractive grating in the cubic phase and the cooling of the sample under an applied field into the rhombohedral phase. We discuss possible mechanisms responsible for the effect.

[1] Y. Yacoby,et al. Differential Raman scattering from impurity soft modes in mixed crystals of K1−xNaxTaO3 and K1−xLixTaO3 , 1974 .

[2] F. Micheron,et al. Photoinduced phase transitions in (Sr, Ba)Nb2o6 crystals and applications , 1974 .

[3] J. J. Amodei,et al. HOLOGRAPHIC PATTERN FIXING IN ELECTRO‐OPTIC CRYSTALS , 1971 .

[4] J. Sokoloff,et al. Disorder-induced dynamic fluctuations in KTN , 1985 .

[5] B. Halperin,et al. Defects and the central peak near structural phase transitions , 1976 .

[6] A. Agranat,et al. Determination of the physical parameters controlling the photorefractive effect in KTa1-xNbx O3:Cu,V , 1991 .

[7] G C Valley,et al. Hologram fixing in Bi(12)TiO(20) using heating and an ac electric field. , 1989, Applied optics.

[8] F. Micheron,et al. Field and time thresholds for the electrical fixation of holograms recorded in (Sr0.75Ba0.25)Nb2O6 crystals , 1973 .

[9] S. Triebwasser,et al. Study of Ferroelectric Transitions of Solid-Solution Single Crystals of KNbO3-KTaO3 , 1959 .