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ISP Optics Calcium Fluoride (CaF2) Wedged Windows

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Calcium Fluoride (CaF2) Wedged Windows

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ISP Optics Calcium Fluoride (CaF2) Wedged Windows feature a 30 arcmin wedge to eliminate fringe patterns from etalon effects and to prevent cavity feedback. Calcium fluoride’s combination of low absorption and high damage threshold make these windows a popular choice for free-space lasers. Its low refractive index allows it to be used without an anti-reflective coating. ISP Optics Calcium Fluoride (CaF2) Wedged Windows feature low water solubility and offer superior hardness compared to other fluoride-based substrates, making them suitable for laser applications in harsh environments. Calcium Fluoride (CaF2) Wedged Windows provide laser output protection from environmental effects and are ideal for beam sampling applications.

Common Specifications

Bevel:
Protective as needed
Clear Aperture (%):
85
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
158.3
Poisson's Ratio:
0.26
Young's Modulus (GPa):
75.8
Index of Refraction (nd):
1.495
Surface Quality:
60-40
Coefficient of Thermal Expansion CTE (10-6/°C):
18.85
Density (g/cm3):
3.18

Products

Dia. (mm)  Thickness (mm)   Coating   Wedge Angle   Compare   Stock Number   Price  Buy
25.40 4.00 Uncoated 30'
25.40 4.00 BBAR (2000-5000nm) 30'
25.40 3.00 Uncoated
25.40 3.00 BBAR (2000-5000nm)
38.10 3.00 Uncoated
50.80 6.00 Uncoated 30'
50.80 5.00 Uncoated

Technical Information

Related Products

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

  • Custom dimensions, materials, coatings, and more
  • High-precision surface quality and flatness
  • Tight tolerances and complex geometries
  • Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

 
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