BaTiO3 Substrates

BaTiO3 single crystal has excellent photorefractive properties, high self-
pumped phase conjugate reflectivity and two-wave mixing (optical amplification)
efficiency, and has huge potential application prospects in optical information
storage. At the same time it is also an important substrate substrate material.

OST Photonics offers high quality BaTiO3 substrates for researchers and
industries. Crystal orientation, size and thickness can be customized according
to your requirements.

Application of BaTiO3 Substrates

Optical information storage

Substrate for epitaxial growth

Advantages of BaTiO3 Substrates

Excellent photo-refractive properties

Excellent ferroelectric properties

High self-pumped phase conjugate reflectivity

High two-wave mixing (optical amplification) efficiency

Ability of BaTiO3 Substrates

Orientation:<100>,<001& , gt;,<110>,<111>, etc.
Dimension: 10x10mm, 10x5mm, 5x5mm, etc.

Thickness: 0.5mm, 1.0mm, etc.

Available items: substrates, blanks and customized optics

Specification and Properties of BaTiO3 Substrates　

Crystal System Tetragona(4m): 13℃< T<132℃
a=3.99Å, c= 4.04Å (at 26℃)
Density 6.02 g/cm3
Melt Point 1612 ℃
Growth Method TSSG (Top Seeded Solution Growth)
Dielectric Constant ea=3700 ec=135(unclamped)
ea=2400 ec=60 (clamped)
Refractive Index 515nm 633nm 800nm
no 2.4912 2.4160 2.3681
ne 2.4247 2.3630 2.3235
Transmit Wavelengths 0.43-6.30μm
Photoelectric Coefficient rT13=8±2 pm/V rT33=105±10 pm/V
rT42=1300±100 pm/V
Reflectivity of SPPC (at 0 deg. cut） 50 - 70 % for λ = 515 nm(Ce:BaTiO3)
40 - 60 % (Pure BaTiO3) for λ = 515 nm
50 - 80 % for λ = 633 nm(Ce:BaTiO3)
40 - 60 % for λ = 633 nm (Pure BaTiO3)
Two-wave Mixing Coupling Constant 10 -40 cm-1
Absorption Loss λ: 515nm λ: 633nm λ: 800nm
α: 0.285 cm-1 α: 0.108 cm-1 α: 0.033 cm-1
Orientation <100>,<001>,<110>,<111>, etc.
Orientation Tolerance ±0.5° or better
Dimension 10x10mm, 10x5mm, 5x5mm, etc.
Dimension Tolerance ±0.1 mm or better
Thickness 0.5mm, 1.0mm, etc.
Thickness Tolerance ±0.05 mm or better
Surface Finish Single side polished (SSP)/Double sides polished (DSP)
Surface Roughness Ra<10Å
Atomic Particle Microscopy (AFM) test report can be provided.
Package Class 100 clean bag, Class 1000 super clean room
Note:
The BTO substrates are poled, but with domains
BTO single crystal must be stored in temperature above 13 ℃ to avoid phase
transition which will cause twin or domain inside crystal

Minimum Order: 1 pieces

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