Fe:LiNbO3 Crystal is a kind of common used photorefractive materials with large electro-optic (E-O) coefficients, high photorefractive sensitivity and high diffraction efficiency. Compared to BaTiO
3 series photorefractive crystals, it has some outstanding advantages such as the easy operation and storage, low cost and large size availability, which make it more suitable for volume fabrication and practical devices. Therefore, Fe:LiNbO3 crystal has a wide range applications: Holographic Storage; Bragg Grating, Dynamic Holography; Optical Memories; Optical Phase Conjugation and Neutral Networks.CASIX has established the mass production facilities in growing and providing high quality Fe:LiNbO
3 crystals. All the Fe:LiNbO3 crystals are completely poled and strain & scatter free, which are of low variation of refractive indices and high extinction ratio. Special processing techniques are implemented to meet all OEM and R&D requirements.1. Basic Properties
Crystal Structure |
Trigonal, space group R3c |
Cell Parameters |
a = 0.5148, c = 13.863, Z = 6 |
Melting Point |
1255oC |
Curie Point |
1140oC |
Mohs Hardness |
5 |
Density |
4.64 g/cm3 |
Color |
Colorless to Brown |
Solubility |
Insoluble in H2O |
Note:
Please refer to the LiNbO3 crystal for further thermal and optical properties.2. Standard Specifications of Fe:LiNbO
3 CrystalsComposition |
Congruent |
Available Size |
40x40x40 mm or 3" in diameter |
Iron Level |
0.005 to 0.20 mol% |
Orientations |
0 º, 45º, C-cut or others directions |
Surface Quality (Scratch/Dig) |
40/20 or better |
Surface flatness |
l/4 @ 633 nm or better |
Orientation |
¡À0.5º |
Chamfer |
< 0.2 mm @ 45 º |
Parallelism |
better than 30 arc sec |
Other specifications and AR coatings can be provided upon request.
Copyright 1998 CASIX, Inc. All rights reserved.
Last Revised: May 19, 1999
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