Dielectric Beamsplitter, 50.8 mm, Terahertz Refl., 450-800 nm Trans.

Technical Specs

  • Diameter
    50.8 mm
  • Reflectance Band
    1-120 Thz
  • Material
    Grade A N-BK7
  • Transmittance Band
    450-800 nm
  • Coating Code
    ITO (front side)
  • Antireflection Coating
    R<2.5% @ 450-800 nm (back side)
  • Angle of Incidence
    45°
  • Wavefront Distortion
    <1λ at 632.8 nm over clear aperture
  • Damage Threshold
    700 W/cm2 CW, 20 mJ/cm2 @ 10 ns pulses
  • Surface Quality
    40-20 scratch-dig
  • Diameter Tolerance
    +0/-0.25 mm
  • Thickness
    6.0 mm  
  • Thickness Tolerance
    ±0.50 mm
  • Wedge
    ≤3 arc min
  • Clear Aperture
    >80% of central diameter
  • Cleaning