Broadband Anti-Reflection Coating

 The BBAR1 broadband visible coating is guaranteed to provide an average reflectivity R of less than 0.5% over the wavelength region of 425 - 675 nm at normal incidence. The BBARλ broadband visible coating is guaranteed to provide an average reflectivity R of less than 0.5% over the wavelength region of 0.8λ to 1.3λ at normal incidence. At 45° incidence angle R < 0.5% for P - polarization and R< 3.0% for S - polarization. At its reflectance minima it matches the performance of a wavelength-matched V-coat, but with much broader off-peak usability. It is fabricated using hard electron beam deposited dielectric materials, and so has excellent resistance to abrasion, moisture and laboratory solvents. It can be deployed on BK7, fused silica and other standard optical glasses. Typical damage threshold is 1kW/cm2 CW and 2 J/cm2 with 10 nS pulses, measured at 532 nm.
  • Average reflectivity < 0.5%
  • Wavelength range 0.8λ to 1.3λ
  • Adhesion meets MIL-C-675C
  • Electron beam evaporated durable multilayer dielectric
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BBAR1 Coating

 

BBARlambda Coating 

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