Gold Mirror, Zerodur, 76.2 mm, λ/20, 650-20,000 nm

  • Wavelength Region
    Broadband
  • Wavelength Range
    650-20000 nm
  • Mirror Shape
    Round
  • Diameter
    76.2 mm  
  • Mirror Size
    Ø76.2 mm
  • Thickness
    14.7 mm  
  • Material
    Zerodur® or equivalent
  • Coating Type
    Protected Gold
  • Coating Code
    ER.4
  • Surface Quality
    10-2 scratch-dig
  • Surface Flatness
    λ/20 at 632.8 nm
  • Angle of Incidence
    0-45°
  • Clear Aperture
    ≥central 80% of diameter
  • Back Surface
    Ground
  • Reflectivity
    Ravg>96%, Rmin>92% @ 650-1700 nmRavg>98%, Rmin>96% @ 1.7-20 µm
  • Damage Threshold
    0.5 J/cm² with 10 ns pulses at 1064 nm, 20Hz
  • Diameter Tolerance
    +0/-0.13 mm
  • Thickness Tolerance
    ±0.25 mm
  • Chamfers
    0.38–1.14 mm face width
  • Chamfers Angle Tolerance
    45° ±15°
  • Cleaning