TY - JOUR
T1 - Holographic gratings by spatial modulation of the Curie-Weiss temperaturein photorefrac:Cu, V
AU - Agranat, Aharon J.
AU - Razvag, Meir
AU - Balberg, Michal
AU - Bitton, Gabby
PY - 1997
Y1 - 1997
N2 - We present experimental evidence indicating the formation of metastable dipolar gratings in potassium lithium tantalate niobate at the paraelectric phase. These dipolar gratings result from the formation of local metastable changes in the Curie-Weiss temperature, which, in the presence of an external electric field, induce changes in the low-frequency polarization. The polarization changes create spatially correlated birefringence gratings due to the electro-optic effect. The dipolar gratings are formed in a slow spontaneous process, to compensate for regular photorefractive gratings immediately after the creation of the latter.
AB - We present experimental evidence indicating the formation of metastable dipolar gratings in potassium lithium tantalate niobate at the paraelectric phase. These dipolar gratings result from the formation of local metastable changes in the Curie-Weiss temperature, which, in the presence of an external electric field, induce changes in the low-frequency polarization. The polarization changes create spatially correlated birefringence gratings due to the electro-optic effect. The dipolar gratings are formed in a slow spontaneous process, to compensate for regular photorefractive gratings immediately after the creation of the latter.
UR - http://www.scopus.com/inward/record.url?scp=0000889039&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.55.12818
DO - 10.1103/PhysRevB.55.12818
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AN - SCOPUS:0000889039
SN - 1098-0121
VL - 55
SP - 12818
EP - 12821
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 19
ER -