Fe:LiNbO3 | BaTiO3 | Ce:BaTiO3 |

Photorefractive Crystals ------>> BaTiO3

BaTiO3 is an excellent photorefractive crystal for self-pumped phase conjugation, four-wave mixing and many other photorefractive processes. It has high beamcoupling gain and short beam-coupling rise time. The highest SPPC reflectivity was reported by using BaTiO3 , It can be operated at visible and near-infraced regions and is good for cw four-wave mixing with milliwatts optical power.

Crystal structure Tetragonal, 4mm
Lattice parameters a=3.992° , c=4.036°
Density 6.02g/cm 3
Hardness Mohs Moths 5
Phase transition temperature -90กใ, 9กใ, 132กใ
Electro-optic coefficients Unclamped Clamped
r 13 19.5 pm/v 8 pm/v
r 33 97 pm/v 28 pm/v
r 42 1460 pm/v 820pm/v
Dielectric Constants ea=3600 ea=2400
e c=2400 ec=60
Photorefractive Crystals ------>> BaTiO3