Optical Window, Sapphire, 50.80 mm Diameter, 2.00 mm Thick

  • Diameter
    50.8 mm
  • Material
    Sapphire
  • Antireflection Coating
    Uncoated
  • Surface Flatness
    λ/4 @ 633 nm
  • Surface Quality
    40-20 scratch-dig
  • Thickness
    2.0 mm  
  • Thickness Tolerance
    ±0.1 mm
  • Parallelism
    ≤3 arc min
  • Cleaning
  • Clear Aperture
    Central 80% of diameter
  • Diameter Tolerance
    +0/-0.25 mm
  • Edge Finish
    Ground and beveled
  • Thermal Expansion Coefficient
    8.4 x 10-6 K-1
  • Thermal Limit
    22 W m-1 K-1
  • Wavelength Range
    150 to 5000 nm