Barium titanate (BaTiO3) single crystal
The main performance parameters |
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Product Name |
BaTiO3 single crystal substrate |
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Crystal structure |
Tetragonal (4mm): 9℃ < T <130.5℃ |
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Lattice constant |
a = 3.99Å, c = 4.04Å (26 ℃) |
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Melting point |
1612 ℃ |
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Growth method |
TSSG ( Top Seeded Solution Growth) |
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Permittivity |
ea = 3700 ec = 135 (Free state) |
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ea = 2400 ec = 60 (Clamping state) |
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Index of refraction |
515nm |
633nm |
800nm |
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no |
2.4912 |
2.4160 |
2.3681 |
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ne |
2.4947 |
2.3630 |
2.3235 |
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Transmission wavelength range |
430 ~ 6300nm |
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Electro-optic coefficient |
rT13 = 8 ± 2pm / V; rT33 = 105 ± 10pm / V; rT42 = 1300 ± 100pm / V |
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Self-pumped phase conjugate reflectivity |
50 - 70 % for l = 515nm(Ce: BaTiO3)
40 - 60 % (PureBaTiO3) for l = 515nm
50 - 80 % for l = 633nm(Ce: BaTiO3)
40 - 60 % for l = 633nm (PureBaTiO3)
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Two-wave mixing coupling coefficient |
10 - 40 /cm |
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Absorption loss |
515nm |
633nm |
800nm |
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0.285 /cm |
0.108 /cm |
0.033 /cm |
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Photorefractive effect in the wavelength range |
380 ~ 800nm |
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Standard Specification |
Orientation |
<100>, <001> or <110>, <111> |
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Size and Thickness |
Size: 10x10mm, 10x5mm, 5x5mm or others |
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Polishing and polarization |
Polishing |
Single side polished or Double side polished |
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Polarization |
<100>; <110> or <111> can not polarized; |
Barium titanate (BaTiO3) single crystal has excellent photorefractive properties, with high self-pumped phase conjugate reflectivity and two-wave mixing (light amplification) efficiency. In the optical information storage has enormous potential applications; while it is also an important substrate material.
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