Thin Film Coatings

We manufacture a wide range of high performance optical coatings deposited on customer supplied or SLS sourced substrates.

Choose from our selection of standard OEM components or ask us to design a custom coating to fulfil your specifications.

Our coatings set the standard for laser damage resistance. For example, our 1064nm AR coatings have achieved LDT of 70 J cm-2 in 20ns and our 193nm High Reflectors meet LDT of 1.5 J cm-2 in 13ns.

Laser damage threshold of our optics was independently tested at:

  • CLRC – Rutherford Appleton Laboratory
  • Lawrence Livermore National Laboratory
  • Spica Technologies Inc.
  • Quantel USA

Technology Capabilities

  • Anti-reflective, Reflective, High Reflective Coatings, Polarisers – Single wavelength, Dichroic and Broadband
  • Ultrahard oxide, durable fluoride, metallic and low-stress coatings
  • Maximum Substrate Diameter: 300mm
  • Spectral Range: 193nm to 2000nm
  • Automatic ultrasonic batch substrate cleaning or manual cleaning using high purity solvent
  • Coating Technology: PVD by Electron Beam or Thermal Source, IAD
  • Laser Damage Threshold (independently tested):
    • 70 J cm-2 in 20ns (1064nm)
    • 1.5 J cm-2 in 13ns (193nm)
  • Uniformity: 0.5% over 100mm diameter
  • Perkin Elmer Lambda 900 and Perkin Elmer Lambda 1050 Spectrometers + URA for spectral measurements
  • Zygo GPI/XP interferometer for substrate surface flatness testing before and after coating
  • Up to λ/10 surface flatness on laser optics after coating

Coating Materials

  • Ultrahard Oxide
    • This type of coating meets the following standards with respect to adhesion and resistance to moderate abrasion; MIL-C-675C,
      MIL-M-13508C, MIL-C-48497A
    • Hard coatings offer the highest laser damage threshold at around 1064nm
  • Fluoride
    • Best solution for DUV (deep ultraviolet)
  • Sulphide/Fluoride
    • Soft low stress coating for Fabry-Perot etalons