UV Grade Calcium Fluoride Windows
UV Grade Calcium Fluoride (CaF₂) Windows are precision optical components manufactured from high-purity calcium fluoride single crystal material. With excellent ultraviolet transmission, low absorption and broadband transmission from approximately 0.13–8 μm, CaF₂ windows provide reliable optical performance across UV, visible and infrared wavelengths. Chenyu Optics manufactures UV grade CaF₂ windows uncoated or with UV AR, VIS AR and NIR AR coatings.
UV Grade Calcium Fluoride Windows Overview
UV Grade Calcium Fluoride (CaF₂) Windows are precision optical components manufactured from high-purity calcium fluoride single crystal material.
With excellent ultraviolet transmission, low absorption and broadband transmission from approximately 0.13–8 μm, CaF₂ windows provide reliable optical performance across UV, visible and infrared wavelengths. Due to their excellent UV transmission and low dispersion characteristics, UV grade calcium fluoride windows are widely used in UV spectroscopy, excimer laser systems, UV imaging and precision optical instruments.
Chenyu Optics supports custom UV grade CaF₂ window manufacturing according to customer drawings, including custom diameter, thickness and coating design for prototype and repeat production.
Key Advantages of UV Grade Calcium Fluoride Windows
UV Spectroscopy & Excimer Laser Systems
UV grade calcium fluoride windows are widely used for high-transmission UV performance in spectroscopy systems, excimer laser setups and precision UV imaging equipment.
Typical Specifications of UV Grade Calcium Fluoride Windows
| Material | Calcium Fluoride (CaF₂), Single Crystal |
|---|---|
| Optical Function | UV-IR broadband transmission window |
| Transmission Range | Approx. 0.13 – 8 μm |
| Refractive Index | Approx. 1.43 @ 1 μm |
| Dispersion | Low |
| Density | Approx. 3.18 g/cm³ |
| Hardness | Mohs approx. 4 |
| Absorption | Low |
| Surface Flatness | λ/10 @ 633 nm |
| Surface Quality | 20-10 / 40-20 scratch-dig |
Spectral Transmission Curve (Typical)
Why Choose Chenyu Optics for UV Grade Calcium Fluoride Windows
Chenyu Optics focuses on drawing-based precision crystal window manufacturing for UV, laser and broadband optical systems. We support prototype verification, small-batch production and repeat manufacturing for non-standard UV grade CaF₂ windows.
Manufacturing Capability for UV Grade Calcium Fluoride Windows
Precision Polishing
Careful grinding and polishing procedures suited to relatively soft CaF₂ crystal material.
Optical Coating
UV AR, VIS AR and NIR AR coating options for UV spectroscopy and laser applications.
Inspection & Packaging
Dimensional inspection, surface review, optical performance checking and protective packaging before shipment.
Custom Manufacturing Options for UV Grade Calcium Fluoride Windows
Dimensions & Geometry
Custom diameter and thickness can be manufactured according to customer drawings, with standard or custom window shapes.
Surface & Mechanical Quality
Surface flatness, surface quality and edge treatment can be selected according to optical performance requirements, with attention to the material's mechanical softness.
Coating & Wavelength Design
Uncoated, UV AR, VIS AR, NIR AR and custom AR coatings can be specified for UV, visible or infrared applications.
UV Grade Calcium Fluoride Material Comparison
| Calcium Fluoride (CaF₂) | Barium Fluoride (BaF₂) | Sapphire | Magnesium Fluoride (MgF₂) | |
|---|---|---|---|---|
| Transmission | UV to MWIR, approx. 0.13 – 8.0 μm | UV to IR, approx. 0.2 – 12 μm | UV to MWIR, commonly 0.2 – 5.5 μm | Deep UV to IR, approx. 0.12 – 7.5 μm |
| Refractive Index | Approx. 1.43 @ 1 μm | Approx. 1.46 @ 1 μm | Approx. 1.76 | Approx. 1.38, low index |
| Mechanical Notes | Relatively soft and brittle, low hygroscopicity | Soft, slight hygroscopicity, avoid prolonged moisture exposure | Very hard and chemically durable | Relatively soft and brittle, low to moderate hygroscopicity |
| Typical Use | UV spectroscopy, excimer laser optics | Broadband UV-IR spectroscopy, thermal imaging | Protective windows, harsh environment optics | Deep UV optics, beam expansion, laser divergence control |
Applications of UV Grade Calcium Fluoride Windows
UV Spectroscopy Systems
High-transmission windows for ultraviolet spectroscopic measurement.
Excimer Laser Systems
Excellent UV transmission for excimer laser optics.
UV Imaging Systems
Low-dispersion windows for precision UV imaging.
Optical Instruments
Precision UV windows for instrument optics.
Scientific Research Equipment
Precision windows for research and laboratory optical setups.
UV Detection Systems
Reliable UV transmission for detection instruments.
UV Grade Calcium Fluoride Windows FAQ
Why is calcium fluoride used for UV optical windows?
Calcium fluoride provides excellent UV transmission, low absorption, and low dispersion, making it suitable for ultraviolet optical systems.
What wavelength range does UV grade CaF₂ support?
UV grade calcium fluoride typically provides transmission from approximately 0.13–8 μm.
Can CaF₂ windows be used in excimer laser systems?
Yes. CaF₂ is commonly used in UV laser systems due to its excellent ultraviolet transmission characteristics.
Can UV grade calcium fluoride windows be customized?
Yes. Chenyu Optics provides customized dimensions, surface quality, thickness, and AR coating options.
What information should I provide for a quotation?
Please provide diameter, thickness, surface flatness, surface quality, coating requirement, quantity and drawing if available.
Where can I learn more about infrared optical materials?
Additional infrared optical material information can be found from Edmund Optics.
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Need Custom UV Grade Calcium Fluoride Windows?
Send us your drawing, diameter, thickness, coating requirements and quantity. Chenyu Optics will review the optical and mechanical specifications and provide a suitable UV grade CaF₂ window manufacturing suggestion.