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CaF2 (Calcium Fluoride) Windows
CaF2
is a cubic crystal with an excellent transmission from 130 nm to 10 μm
and has widespread applications as transparent windows in the ultraviolet and infrared
spectra.
Recently, CaF2 windows found a wide use for broadband
continuum generation (white light generation) pumped by femtosecond lasers.
Newlight Photonics supplies [001] cut (i.e. the surface is
perpendicular to the [001] axis) high quality CaF2 windows for
continuum generation.
CaF2 windows cut along a random orientation and polycrystalline
CaF2 are also available.
Basic Properties
CaF2 used for
stable femtosecond white light generation from UV to IR
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Standard Products
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Part No. |
Dia φ or Width W(mm) |
Thickness(mm) |
Cut axis |
In stock |
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CAF0010-C |
φ12.7 |
1.0 |
[001] |
Email/Call |
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CAF0020-C |
φ12.7 |
2.0 |
[001] |
Yes |
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CAF1010-C |
φ25.4 |
1.0 |
[001] |
Yes |
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CAF1020-C |
φ25.4 |
2.0 |
[001] |
Yes |
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CAF1030-C |
φ25.4 |
3.0 |
[001] |
Yes |
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CAF1040-C |
φ25.4 |
4.0 |
[001] |
Yes |
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CAF1050-C |
φ25.4 |
5.0 |
[001] |
Yes |
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CAW1010-C |
W25.4 |
1.0 |
[001] |
Email/Call |
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CAW1020-C |
W25.4 |
2.0 |
[001] |
Email/Call |
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CAW1050-C |
W25.4 |
5.0 |
[001] |
Email/Call |
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CAF1020-R |
φ25.4 |
2.0 |
Random |
Yes |
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CAF1050-R |
φ25.4 |
5.0 |
Random |
Email/Call |
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Round Parallel Windows
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Square Parallel Windows
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In addition to these standard parts, Newlight can
produce a wide variety of custom products. Please
contact us
for assistance for your custom requirements.
Anti-reflective coatings are available upon request.
Specifications of CaF2 Windows
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Orientation: |
[001] (-C), random (-R) or as specified |
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Dimension Tolerance: |
±0.1mm |
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Clear Aperture: |
> 85% |
Parallelism:
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< 10 arc sec (T>=2mm)
< 60 arc sec (T=<1mm) |
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Flatness:
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λ/6 @ 632.8nm |
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Surface Quality: |
20/10 Scratch and Dig
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Transmission
Wavefront Distortion: |
< λ/6 @632.8nm |
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Bevel: |
< 0.25mm X 45° |
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Coatings: |
CaF2 windows
are typically uncoated. AR coating with R <
0.2% available upon request
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