eo_logo
 
Product added to cart

Sapphire Windows with Through Holes

Sapphire Windows with Through Holes

×
  • 25.4mm Diameter Sapphire Substrates
  • 3.2 - 19.1mm Through Hole Diameters
  • High Transmission From 0.33 - 5.5μm

Common Specifications

Bevel:
Protective as needed
Diameter (mm):
25.40 ±0.127
Thickness (mm):
1.00 ±0.127
Knoop Hardness (kg/mm2):
1900
Parallelism (arcmin):
≤3.5
Poisson's Ratio:
0.27
Young's Modulus (GPa):
435
Abbe Number (vd):
72.24
Axis Orientation:
Random
Birefringence (no-ne):
0.008 for Visible Light Orthogonal to Optical Axis
Coating:
Uncoated
Index of Refraction (nd):
1.77
Substrate:
Sapphire (Al2O3)
Surface Flatness (P-V):
2λ (typical)
Surface Quality:
80-50
Wavelength Range (nm):
330 - 5500
Coefficient of Thermal Expansion CTE (10-6/°C):
8.8
Density (g/cm3):
3.97

Products

Dia. (mm)  Through Hole Diameter (mm)   Thickness (mm)   Coating   Compare   Stock Number   Price  Buy
25.40 3.20 1.00 Uncoated
25.40 6.35 1.00 Uncoated
25.40 12.70 1.00 Uncoated
25.40 19.10 1.00 Uncoated

Product Details

Sapphire Windows with Through Holes, also referred to as sapphire washers, feature 25.4mm diameter sapphire substrates with a centered through hole ranging in diameter from 3.2 - 19.1mm. Sapphire offers extreme surface hardness second only to diamond, high thermal conductivity, and is chemically inert, making it ideal for use in harsh environments. These windows provide high transmission from 0.33 - 5.5μm and can be made much thinner than glass windows due to the structural strength of sapphire. Sapphire Windows with Through Holes can be manufactured as modified standard versions of our sapphire windows or as entirely custom products; please contact us to discuss your application requirements.

Related Products