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
- This type of coating meets the following standards with respect to adhesion and resistance to moderate abrasion; MIL-C-675C,
- Fluoride
- Best solution for DUV (deep ultraviolet)
- Sulphide/Fluoride
- Soft low stress coating for Fabry-Perot etalons