Barium Fluoride Crystal Description
Barium Fluoride Crystal has excellent transparency in the ultraviolet (UV) range and is used as a material for UV optics and windows. It has a wide transmission range from 150 nm to 12 µm, making it suitable for applications such as spectroscopy, semiconductor lithography, and other UV-sensitive technologies.
It also possesses good mechanical and thermal properties, including a high melting point of around 1360 degrees Celsius, low thermal expansion, and high hardness. These properties make barium fluoride crystal suitable for use in harsh environments and under high temperatures, such as in nuclear applications and as scintillation detectors in particle physics experiments.
Additionally, barium fluoride crystal exhibits low refractive index and dispersion properties compared to other transparent materials, allowing for the production of lenses and prisms with minimal distortion or chromatic aberration.
Barium Fluoride Crystal Specification
Synonyms: Barium Difluoride, Barium (II) Fluoride, Molecular Weight (M.W.): 175.32
| Item No. |
Description |
Shape |
Lot Size |
US$ |
| C-BaF2 |
Barium Fluoride Crystal |
Rod, Blank, Windows or Customized Windows, Lens, Prism |
50, 200, 1000 pc |
Ask for a quotation |
| Crystal Type |
Cubic, CaF2 Type structure |
| Transmission Range |
0.15-15 µm |
| Refractive Index |
n0=1.6654, ne=1.4898 @ 509 nm |
| Density |
4.89 g/cm3 |
| Melting Point |
1280, 1335°C |
| Molecular Weight |
175.3368 |
| Thermal Conductivity |
11.72 W/(m•K) @ 13°C |
| Specifics Heat |
410 J/(kg•K) @ 27°C |
| Thermal Expansion |
18.1x10-6/K @ -110-120°C |
| Hardness (Knoop) |
82 (indenter load: 500g) |
| Shear Modulus |
25.4 Gpa |
| Bulk Modulus |
268.89 Gpa |
| Rupture Modulus |
26.2 Mpa |
| Dielectric Constant |
7.33 @ f=2 MHz |
| Solubility Water |
0.17 g/100g @ 23°C |
| Crystal Structure |
Single crystal, synthetic |
| Cleavage Planes |
(111) |
Barium Fluoride Crystal Applications
1. X-ray and gamma-ray detection: BaF2 is widely used as a scintillator material in detectors for X-rays and gamma-rays. It can efficiently convert high-energy radiation into visible light, allowing for the detection and measurement of ionizing radiation.
2. Ultraviolet (UV) optics: Barium fluoride crystals are transparent to a wide range of wavelengths, including the UV region. They are used in UV optical components, such as windows, lenses, and prisms, for various applications such as spectroscopy, lithography, and UV laser systems.
3. Infrared (IR) optics: BaF2 has good transmission in the infrared region, particularly in the mid-infrared range. It is used for IR windows and lenses in applications such as thermal imaging, IR spectroscopy, and IR laser systems.
4. Scintillation detectors: BaF2 crystals are employed in particle and high-energy physics experiments as scintillation detectors. They can detect and measure the energy of charged particles and photons, making them useful for studying nuclear reactions and particle interactions.
5. Fluoride ion lasers: Barium fluoride crystals can be used as an active medium in fluoride ion lasers. When excited with a suitable light source, these lasers emit coherent light in the deep ultraviolet spectrum, which finds applications in scientific research, microlithography, and photolithography.
6. Optical coatings: BaF2 crystals can be used as optical coatings due to their low refractive index. They can be used to enhance the antireflection properties of optical components, reduce light scattering, and improve the transmittance of optical systems.
7. High-pressure research: BaF2 crystals are used in high-pressure experiments to generate extreme conditions. They can serve as diamond anvil cell windows, which enable the generation of pressures exceeding a million atmospheres.
Barium Fluoride Crystal Package
BaF₂ Crystals are securely packaged in moisture-resistant, anti-static, and shock-absorbing materials. Custom packaging options, such as cleanroom packaging, are also available for sensitive applications.
Barium Fluoride Crystal FAQs
Q1 Are CaF₂ Crystals suitable for high-power laser systems?
Yes, CaF₂ Crystals are ideal for high-power laser systems due to their high laser damage threshold and low absorption in the UV to IR spectrum.
Q2 What surface finishes are available for CaF₂ Crystals?
Surface finishes include:
- Polished surfaces with ultra-low roughness (Ra < 5 Å) for high-precision optics
- Ground surfaces for experimental use
- Custom finishes tailored to specific application requirements
Q3 What shapes and sizes are available for CaF₂ Crystals?
CaF₂ Crystals are available in various shapes and sizes, including:
- Windows: Round, square, or custom dimensions
- Lenses: Plano-convex, bi-convex, and custom geometries
- Prisms and Rods: Standard and custom configurations Custom dimensions can be manufactured based on specific needs.
