Description of Bismuth Silicate (BSO) Crystal Substrates
Bismuth silicate (Bi12SiO20) single crystal, abbreviation BSO substrate is an excellent material with highly efficient photoconductors with low dark conductivity that allows a build-up of large photo-induced space-charges.
BSO crystal is a good photorefractive crystal with a wide range of applications. It is a light yellow photoelectric/electro-optical crystal and a photorefractive crystal. It can be used in electro-optic readout optical memory (PROM), thin-film optical waveguide, photorefractive and phase conjugation.

Specifications of Bismuth Silicate (BSO) Crystal Substrates
Crystal structure :
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Cubic
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Lattice constant :
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a=10.146Å
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Growth method :
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Czochralski method
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Melting point :
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930℃
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Density :
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9.2g/cm3
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Mohs hardness :
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4.5 Mohs
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Dielectric constant :
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εS11/ε0 42.7、εT11/ε0 47.5
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Elastic stiffness coefficient ( x1011N/m2) :
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CE11 1.33、CE44 0.25
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The piezoelectric strain constants (C/m2 ) :
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e14 1.01
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Through the range (nm) :
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470~7500
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Electro-optic coefficient (x10 -12 M/V)
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r41 5
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Refractive index :
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2.45 @ 632.8nm
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Refractive index gradient (x10 -5 /cm) :
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< 5 @ 632.8nm
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Opticity (mm -1 ) :
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left 20° ~ @632.8nm
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Transmittance (%):
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69 @632.8nm
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Crystal orientation :
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<100>, <110>, <001> ±0.5°
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Standard Size:
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45x45x0.5mm, 10x10x0.5mm, 25x25x0.5mm
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Polishing:
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Single side polished or Both side polished
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Applications of Bismuth Silicate (BSO) Crystal Substrates
- Spatial light modulators
- Optical switches
- Pockels readout optical memory (PROM) applications
- Optical waveguides
Package of Bismuth Silicate (BSO) Crystal Substrates
Bismuth Silicate (BSO) Crystal Substrates are meticulously packaged with anti-static protective layers, moisture-resistant sealing, and shock-absorbing materials to ensure safe transit and storage. Each package includes detailed labeling and documentation to meet international shipping standards.
FAQs
Q1 What makes BSO substrates suitable for electro-optical applications?
BSO crystals have a high electro-optical coefficient, making them ideal for use in modulators, switches, and other devices that require fast and precise light modulation.
Q2. Are BSO crystals transparent?
Yes, BSO crystals are highly transparent in the visible and near-infrared regions, making them suitable for optical and photonic applications.
Q3. Can BSO substrates be customized for specific requirements?
Yes, we offer customization for BSO substrates, including size, orientation, and surface finish, to meet specific project needs.