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Achromatic cemented

  • Waveplates-Multiple-and-Dual

    Achromatic cemented waveplates

    The achromatic waveplates are made from 25.4 mm crystalline quartz substrate and magnesium fluoride. These substrates are cemented to each other. This reduces the number of surfaces requiring AR coating while increasing the physical size in order to allow for larger beam diameters.
      • Wavelength options: 465 nm – 610 nm (VIS) | 610 nm – 850 nm (VIS/NIR) | 700 nm – 1000 nm (NIR) | 1200 nm – 1650 nm (IR)
      • Low retardance variation
      • Cemented design
      • Free aperture of 23 mm
      • Retardance λ/2 and λ/4
      • Material: Crystalline quartz & MgF2
    • Thickness 0.3 to 1.3 mm
      Wave front deformation λ/4 @ 633 nm
      Surface quality 20/10 scratch/dig
      Parallelism 0.5 seconds
      Retardance tolerance λ/100 with respect to wavelength range
      Temp. coefficient of retardance less than λ/500 per °C
      Beam divergence/parallelism Less than 1 minute
      Angle of incidence tolerance For max. 1 %
      Retardance variation +/-3°
      Storage temperature range -40°C to +75°C
      Coating (medium reflection) > 1% for 465–610 nm per surface, > 0.7% for 610–850 nm per surface, > 0.6% for 700–1000 nm per surface, > 0.5% for 1200–1650 nm per surface
      Damage threshold 2 J/cm2 (8 ns pulse @ 1064 nm); 500 kW/cm2, CW
      Diameter 25.4 mm with retaining ring
      Ring thickness 30 mm
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