BaF2 Substrate

Barium fluoride (BaF2) crystal belongs to a cubic crystal system, with good moisture resistance, a melting point of 1280 °C, and high temperature, the refractive index does not change much in a wide wavelength range and with a wide light transmission range. The highest transmittance can reach >90% in the wavelength range of 0.2μm to 10μm. BaF2 crystal has good optical and mechanical properties. These make BaF2 crystal widely used in infrared and ultraviolet windows and prism substrates.

OST Photonics offers high quality BaF2 substrates for researchers and industries. Crystal orientation, size, and thickness can be customized according to your requirements.

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Features

  • Good optical and mechanical properties

  • Excellent scintillation performance

  • Good moisture resistance

  • High Density

Applications

  • Infrared and ultraviolet windows/prism

  • High energy physics

  • Nuclear physics

  • Nuclear medicine

Processing Capability

    • Orientation: <100>,<110>,<111>, etc.

    • Dimension: 1”, 2”, 10x10mm, 5x5mm, etc.

    • Thickness: 0.5mm, 1.0mm, etc.

    • Available items: wafers, substrates, windows, prisms, blanks and customized optics

Specification and properties of BaF2 Substrates

Crystal System

Cubic

Crystal Lattice Constant

6.196Å

Density

4.88 g/cm^3

Melt Point

1354 ℃

Growth Method

Bridgeman

Hardness

3 Mohs

Thermal Expansion

18.1×10^-6/℃//c

Refractive Index

1.47443

Transmit Wavelengths

0.13-12.5μm

Color Deviation

0.00578Hf-Hc

Temperature Coefficient

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Cleavage Plane

<111>

Orientation

<100>,<110>,<111>, etc.

Orientation Tolerance

±0.5° or better

Dimension

1”, 2”, 10x10mm, 5x5mm, etc.

Dimension Tolerance

±0.1 mm or better

Thickness

0.5mm, 1.0mm, etc.

Thickness Tolerance

±0.05 mm or better

Surface Roughness

Ra<5Å (5×5μm)

Surface Finish

Single side polished (SSP)/Double sides polished (DSP)

Package

Class 100 clean bag, Class 1000 super clean room