Image correlation using isotropic and anisotropic higher-order generation and mutually pumped phase conjugation in photorefractive barium titanate

摘要: Using two beam coupling geometry, high order copropagating and contrapropagating isotropic anisotropic self-diffraction are demonstrated using photorefractive cerium doped barium titanate. At small incident angles, typically less than 0.015 radians, both codirectional (CODIS) contradirectional (CONDIS) orders generated simultaneously. larger approximately more 0.2094 only anisotropic-self diffraction (CODAS) generated. Ongoing work on image auto/cross correlation results also shown.