Broadband Dielectric Beamsplitter, UVFS, 25.4 mm, λ/20, 1290-1580 nm

  • Wavelength Range
    1290-1580 nm
  • Diameter
    25.4 mm
  • Material
    UV Grade Fused Silica
  • Coating Code
    BS.3
  • Antireflection Coating
    NC.3
  • Angle of Incidence
    45°
  • Reflection
    Rs = 50 ±5%, Rp ≤Rs
  • Damage Threshold
    500 W/cm2 CW, 10 J/cm2 for 10 nsec pulses, typical @ 1570 nm
  • Surface Flatness
    λ/20 at 632.8 nm over the clear aperture
  • Surface Quality
    10-2 scratch-dig
  • Diameter Tolerance
    +0/-0.13 mm
  • Thickness
    6.1 mm  
  • Thickness Tolerance
    ±0.38 mm
  • Wedge
    30 ±15 arc min
  • Clear Aperture
    > central 80% of diameter
  • Chamfers
    0.25-0.76 mm face width
  • Chamfers Angle Tolerance
    45° ±15°
  • Durability
    MIL-C-675C, moderate abrasion million cycles
  • Cleaning