Barium Fluoride (BaF₂) substrates are optical-grade single crystals used for UV optics, infrared windows, spectroscopy, photonics, and thin-film semiconductor research. With excellent transparency from approximately 150 nm to 12 μm, BaF₂ wafers are widely used for optical structures, IR detectors, laser systems, and the epitaxial growth of selected II-VI semiconductor materials. UniversityWafer supplies polished BaF₂ substrates in various diameters, thicknesses, and surface finishes for optical and semiconductor research applications.
Barium Fluoride (BaF₂) substrates are used in optical structures, infrared windows, UV optics, photonics, spectroscopy, radiation detection, and thin-film research. Because BaF₂ offers broad transmission from the ultraviolet through the mid-infrared range, researchers often request polished BaF₂ wafers for optical devices that require transparency between 3 µm and 10 µm.
A doctoral candidate in applied physics requested a quote for the following:
I was wondering if I could get a quotation for BaF₂ wafers, 1-inch and 2-inch diameter, both sides polished.
Quantity: 5
Diameter: 2 inches
Doping: Undoped
Surface Finish: Both sides polished
Thickness: 200–500 µm
Application: Optical structures requiring transparency between 3 µm and 10 µm
Reference #105906 for specifications and pricing.
BaF₂ wafers are commonly selected for applications that require wide optical transmission, low refractive index, and compatibility with UV, IR, and mid-infrared optical systems. Researchers use these substrates for spectroscopy, laser optics, IR detector research, optical coatings, and photonic structures.
Common BaF₂ substrate options include:
UniversityWafer supplies BaF₂ substrates and optical wafers for photonics, infrared research, spectroscopy, thin-film studies, and semiconductor-related optical applications. Send us your required diameter, thickness, polish, quantity, and wavelength range for a fast quotation.
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Barium Fluoride (BaF₂) substrates are single-crystal optical materials used for UV, infrared, photonics, spectroscopy, radiation detection, and thin-film research. BaF₂ has a cubic fluorite crystal structure, broad optical transmission, low refractive index, and excellent transparency from the ultraviolet through the mid-infrared range.
Researchers use BaF₂ wafers and substrates for optical structures, IR windows, UV optics, scintillation detectors, photonic devices, and epitaxial growth of selected semiconductor materials.
Barium fluoride substrates are often selected when a material must transmit light across a broad wavelength range. Their transparency from the UV into the infrared makes them useful for optical windows, spectroscopy, laser components, IR detectors, and photonic structures.
BaF₂ is especially useful for researchers working with optical devices that require transparency in the 3 µm to 10 µm infrared range, including mid-IR optical structures, coatings, and detector research.
BaF₂ substrates can also be used as templates for thin-film semiconductor research and epitaxial growth. Because barium fluoride has lattice compatibility with selected materials, it is sometimes used for growing II-VI semiconductors and infrared materials.
Researchers may use BaF₂ substrates for materials such as CdTe, PbTe, and other compounds used in infrared detectors, photovoltaic research, and optoelectronic devices.
Advantages: BaF₂ provides excellent optical transparency, low refractive index, wide bandgap behavior, and useful lattice properties for selected thin-film growth applications.
Limitations: Barium fluoride is softer than many semiconductor substrates and should be protected from moisture, humidity, scratches, and aggressive handling. For high-strength or harsh-environment applications, researchers may also compare BaF₂ with sapphire, fused silica, or silicon substrates.
Barium fluoride is less common than silicon, sapphire, quartz, or fused silica, but it offers important advantages for specialized UV and IR optical applications. Its broad transmission range and low refractive index make it valuable for optical structures, spectroscopy, radiation detection, and selected semiconductor thin-film research.
