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) circular windows are high-performance optical components offering excellent transmission from Vacuum UV (130nm) to Infrared (
) wavelengths. They are ideal for IR spectroscopy, laser systems, and high-temperature applications due to low absorption and thermal stability. These windows are often sold uncoated (13mm-25mm standard sizes) with a ~90% clear aperture and 60-40 or 40-20 surface quality.
Key Characteristics & Specifications
- Material: Optical grade Calcium Fluoride () crystal.
- Transmission Range: 130 nm – 9.5 (UV to IR).
- Refractive Index: Low, (at 2000 nm), allowing for high transmission.
- Surface Quality: Commonly 60-40 or 40-20 (scratch-dig).
- Operating Temp: Up to in dry environments; degrades overwith moisture.
- Durability: Relatively rugged, but susceptible to harsh chemical etching.
Common Applications
Key Considerations
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Web results
Calcium Fluoride (CaF2) Circular Optical Window- 25x4mm
Fisher Scientific
https://www.fishersci.com › Products
Fisher Scientific
https://www.fishersci.com › Products
Calcium Fluoride (CaF2) Circular Optical Window- 25x4mm. Wavelength range: 130nm-9.5μm. Surface quality: 60/40. Clear aperture: 90%. Diameter tolerance: ±0.1mm.Read more
$182.58In stock4–8 day delivery30-day returns
Calcium Fluoride 13mm Dia x 2mm window
Crystran
https://www.crystran.com › Windows › Calcium Fluoride
Crystran
https://www.crystran.com › Windows › Calcium Fluoride
Discover our high-quality CaF2 Circular Window, crafted from optical-grade Calcium Fluoride (CaF2), perfect for IR, visible, and IR spectroscopy.
£14.70
Calcium Fluoride (CaF 2 ) Windows
Edmund Optics
https://www.edmundoptics.com › calcium-fluoride-cafs...
Edmund Optics
https://www.edmundoptics.com › calcium-fluoride-cafs...
TECHSPEC® Calcium Fluoride (CaF2) Windows offer a low index of refraction, providing high transmission from 200 - 7000nm when used uncoated.Read more
MSE PRO Uncoated Calcium Fluoride (CaF2) Flat ...
MSE Supplies
https://www.msesupplies.com › products › mse-pro-unco...
MSE Supplies
https://www.msesupplies.com › products › mse-pro-unco...
Calcium fluoride (CaF 2 ) window is an optical window typically employed as a protective shield for electronic sensors or detectors in external environments.Read more
$57.95In stock5-day delivery30-day returns
CaF2 Windows — Firebird Optics
Firebird Optics
https://www.firebirdoptics.com › optical-windows › caf2...
Firebird Optics
https://www.firebirdoptics.com › optical-windows › caf2...
These windows are transparent to ultraviolet, visible, and near-infrared light, making them ideal for use in a variety of optical systems.Read more
$92.00In stock$15 delivery
32x3mm CAF2-32x3 - Firebird Optics
Spectra Services
https://spectraservices.com › Brands › Firebird Optics
Spectra Services
https://spectraservices.com › Brands › Firebird Optics
Calcium Fluoride windows are highly durable and can withstand harsh environmental conditions, making them ideal for use in industrial and scientific ...Read more
$232.20In stock4-day delivery30-day returns
Calcium Fluoride Caf2 Circular Window
UNI Optics
https://www.uni-optics.com › calcium-fluoride-caf2-circ...
UNI Optics
https://www.uni-optics.com › calcium-fluoride-caf2-circ...
It is chemically resistant to common acids and alkali at temperatures up to 1000 °C as well as to HF below 300 °C. These properties encourage its wide use in ...Read more
Knight Optical Flat Window - WCF1011
MEETOPTICS
https://www.meetoptics.com › ... › Optical Windows
MEETOPTICS
https://www.meetoptics.com › ... › Optical Windows
Calcium Fluoride Window (CaF2) Raman Grade 10mm dia x 1mmthk ; Dimensions: Ø 10 mm ; Thickness: 1 mm ; Parallelism: 5' ; Applications: Raman ; Shape: Round.Read more
$82.9830-day returns
(MQF048) Calcium Fluoride (CaF2) Windows, Round, Size
Machined Quartz
https://machinedquartz.com › product › mqf048-calciu...
Machined Quartz
https://machinedquartz.com › product › mqf048-calciu...
(MQF048) Calcium Fluoride (CaF2) Windows, Round, Size: φ38.1mm, Thick: 3mm, 130-9000nm. Customizable in tailored sizes. In Stock.Read more
$84.00Free delivery over $1,80014-day returns
Calcium Fluoride (CaF2) Circular Optical Window- 13x2mm
Fisher Scientific
https://www.fishersci.com › Products
Fisher Scientific
https://www.fishersci.com › Products
Calcium Fluoride (CaF2) Circular Optical Window- 13x2mm• Wavelength range: 130nm-9.5µm •Surface quality: 60/40 • Clear aperture: 90% •Diameter tolerance: ±0.1mm ...Read more
$149.944–8 day delivery30-day returns
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