SBN Crystal Material General Description
Strontium-Barium Niobate (SBN:61) is a ferroelectric crystal with exceptional optical and photorefractive properties. Its high photorefractive sensitivity makes it a preferred material in electro-optics and nonlinear optics applications. The material features a tetragonal crystal structure with lattice parameters of a = 12.46 Å and c = 3.946 Å, ensuring uniformity and stability. SBN crystals are grown using the Modified Stepanov method to achieve a high-quality, inclusion-free product with dimensions up to 40 mm. They can be doped with Cerium (Ce) to enhance photorefractive efficiency, expanding their application potential in advanced optical devices.
General Applications and Examples
Property | SBN:61 Values |
Composition | Sr_xBa_(1-x)Nb_2O_6 |
Crystal Structure | Tetragonal (4 mm) |
Lattice Parameters | a = 12.46 Å, c = 3.946 Å |
Density | 5.4 g/cm³ |
Mohs Hardness | 5.5 |
Melting Temperature | 1480°C |
Curie Temperature | 75°C |
Transparency Range | 0.45–5.5 μm |
Optical Properties | SBN:61 Values |
Refractive Index (at 633 nm) | n_o = 2.3103, n_e = 2.2817 |
Birefringence Δn | -0.0286 |
Half-Wave Voltage (λ/2) | 240 V |
Electro-Optic Coefficients | r_33 = 250 pm/V |
Pyroelectric Coefficient | 0.065 μC/cm² K |
Dielectric Constant | 880 |
Specification | Details |
Orientation | Short edge along tetragonal axis |
Poling | Poled or unpoled |
Electrodes | Carbon-water or no electrodes |
Clear Aperture | 85% |
Face Dimensions Tolerance | ±0.2 mm |
Thickness Tolerance | ±0.2 mm |
Parallelism Error | <30 arcsec |
Protective Chamfers | <0.1 mm at 45° |
Surface Quality | 40-20 S-D over aperture |
Surface Flatness | <λ/4 @632.8 nm |
Photonics On Crystals (POC) offers state-of-the-art fabrication techniques, ensuring precise control over doping levels, dimensions, and performance parameters. Our SBN crystals feature:
Material | Face Dimensions | Length | Doping | SKU | Price (USD) |
SBN:61 | 5 x 5 mm | 5 mm | Undoped | 73 | 1850 |
10 mm | Undoped | 74 | 2250 | ||
15 mm | Undoped | 75 | 2750 | ||
5 mm | CeO₂ 0.002 wt. % | 6940 | 1850 | ||
10 mm | CeO₂ 0.002 wt. % | 6941 | 2250 | ||
15 mm | CeO₂ 0.002 wt. % | 6942 | 2750 | ||
5 mm | CeO₂ 0.01 wt. % | 6944 | 1850 | ||
10 mm | CeO₂ 0.01 wt. % | 6945 | 2250 | ||
15 mm | CeO₂ 0.01 wt. % | 6946 | 2750 | ||
Customization | Available upon request | Contact for pricing |