Barium Fluoride (BaF2) Windows
A fluoride crystal window with one of the broadest transmission ranges available, spanning deep UV through long-wave infrared, for spectroscopy applications.
Share requirements, quantities and a drawing if available. Specifications and supply terms require confirmation.
Overview
Barium fluoride transmits across an unusually broad range — from the deep ultraviolet through the mid- and into the long-wave infrared — which makes it useful for spectroscopy applications that need a single window material to cover multiple bands. BaF2 is known to be more sensitive to thermal shock and humidity than some other fluoride crystals, a real handling characteristic worth noting to buyers rather than a defect. It sits alongside Dongqiao's existing CaF2 Optical Windows page in the same fluoride-optics material family. Procurement review should center on using BaF2 for infrared or UV access while planning for material handling and environmental exposure.
Key Selection Points
- One of the broadest transmission ranges of any common window material, deep UV through long-wave IR
- Used in broadband spectroscopy instrumentation spanning multiple bands
- Part of the same fluoride-crystal family as CaF2 and MgF2, which Dongqiao already sources
Applications
BaF2 windows are used in broadband spectroscopy instrumentation, scintillation detector windows, and other applications needing a single window material with usable transmission spanning UV through long-wave infrared.
Wavelength Range & Material Guide
This module connects wavelength needs with material choice while keeping reference properties separate from configuration-specific performance. For Barium Fluoride (BaF2) Windows, the module focuses on using BaF2 for infrared or UV access while planning for material handling and environmental exposure.
- Separate general material behavior from the exact grade and coating offered for the RFQ.
- Review environmental, thermal and handling constraints alongside the wavelength band.
- Confirm any numerical transmission range for the selected material, coating and configuration.
- Product-specific review: connect spectral band with surface and edge requirements and document the trade-off against CaF2 windows.
Prepare a product-specific enquiry
Include the requirements you know and identify any points that need confirmation.
| RFQ input | What to provide |
|---|---|
| Input 1 | Use case for Barium Fluoride (BaF2) Windows: document using BaF2 for infrared or UV access while planning for material handling and environmental exposure. |
| Input 2 | First decision pair: spectral band versus BaF2 grade. |
| Input 3 | Integration pair: surface and edge requirements together with moisture, thermal and mounting environment. |
| Input 4 | RFQ-specific instruction: identify environmental exposure, handling protocol and spectral band driving the selection. |
| Input 5 | Add the requested quantity and prototype or production stage. |
| Input 6 | Attach controlled drawings and identify the inspection or spectral evidence the buyer expects. |
Frequently Asked Questions
Is BaF2 fragile or sensitive to handling?
BaF2 is known to be more sensitive to thermal shock and humidity than many other optical window materials, so it is generally handled and installed with that in mind — this is a real, documented material characteristic, not a quality issue.
How does BaF2 compare to CaF2 or MgF2?
BaF2 covers a broader combined UV-to-IR range than CaF2, and extends further into the IR than MgF2, though MgF2 reaches shorter UV wavelengths. Which material fits depends on your exact band — tell us your wavelength requirement and we will help confirm.
Can I get a custom size or drawing-based part for Barium Fluoride (BaF2) Windows?
Barium Fluoride (BaF2) Windows requires this decision to be tied to spectral band and BaF2 grade. Share your drawing or exact dimensions through the RFQ form and we will confirm feasibility.
Which specification should be fixed first for Barium Fluoride (BaF2) Windows?
Begin with spectral band. It determines how BaF2 grade and surface and edge requirements should be evaluated before the mechanical details are finalized.
When is Barium Fluoride (BaF2) Windows a better fit than CaF2 windows?
Choose between them by testing the requirement for using BaF2 for infrared or UV access while planning for material handling and environmental exposure. If that requirement is absent, the comparison product may provide a simpler procurement path.
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