Self-Pumped Photorefractive Gratings in Fe:KNbO3 (Preprint)

*High gain confirmed in off-axis geometries for Fe:KNbO3; *Mismatch between theory and experiment for mid-range crystal angles, especially for the a-c plane; *Large apparent variation in the effective trap density with crystal angle; *Modified theory gives a good fit to experimental data; *Mechanism...

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Bibliographic Details
Main Authors: Evans, Dean R, Gook, G, Carns, J L, Saleh, M A
Format: Report
Language:English
Subjects:
ANGLES
ANISOTROPY
BRIEFING CHARTS
Ceramics, Refractories and Glass
CRYSTALS
DENSITY
EXPERIMENTAL DATA
FOCAL PLANES
GRATINGS(SPECTRA)
HIGH GAIN
Inorganic Chemistry
INTERMEDIATE RANGE(DISTANCE)
IRON
NIOBIUM
Optics
PE62102F
PHOTOREFRACTIVE MATERIALS
POTASSIUM
POTASSIUM NIOBATES
THEORY
TWO BEAM COUPLING
WUAFRLM08R1000
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Description
Summary:*High gain confirmed in off-axis geometries for Fe:KNbO3; *Mismatch between theory and experiment for mid-range crystal angles, especially for the a-c plane; *Large apparent variation in the effective trap density with crystal angle; *Modified theory gives a good fit to experimental data; *Mechanism for trap density anisotropy is unclear. Prepared in collaboration with Universal Technology Corporation, Dayton, OH, UES, Inc., Dayton, OH, and General Dynamics Information Technology, Dayton, OH.