Thin-Film Coatings

We leverage our worldwide precision optics coating centers to produce high-quality thin films that enable a broad range of high-performance and high-volume applications. Our precision coating centers worldwide combine state-of-the-art deposition capabilities to achieve the most wide-ranging and demanding coating designs.

Our thin-film deposition capabilities include:

  • Ion beam sputtering (IBS)
  • Magnetron sputtering (MS)
  • Ion beam assisted deposition (IAD)
  • Advanced plasma source assisted deposition (APS)
  • Electron beam deposition (E-beam)

II-VI thin-film coatings enable our optics to achieve the desired spectral characteristics across the electromagnetic spectrum from the ultraviolet to the far-infrared. II-VI designs and produces low-absorption coatings for low to very high-energy lasers, on a broad range of crystals and metals, and on standard flat or curved surfaces as well as other surfaces precision-shaped by diamond turning. The result is some of the most advanced optics available in the industry that can be scaled to high-volume manufacturing, ranging from micro-optics to large-sized optics and complex freeform optics. The following are examples of II-VI coating capabilities categorized by application:

Industrial Laser Optics

  • High-reflector dielectric coatings for 1 μm
  • Pulsed dual enhanced silver (PDES) coating for 1.06 μm and 0.6328 μm
  • Zero phase shift total reflector (NTR) coating for NIR, 1.03 μm, 1.064 μm, 1.07 μm
  • 90° reflective phase retarder (NRPR) coating for NIR, 1.03 μm, 1.064 μm, 1.07 μm
  • Broad anti-reflective (BAR) coating on zinc selenide (ZnSe) for 5.3-6.0 µm
  • Anti-reflective (AR) coating on zinc selenide (ZnSe) for 5.50 µm (CO laser)

Imaging Optics:

  • Germanium (Ge) for 3-5 µm and 8-12 µm
  • Silicon (Si) for 3-5 µm
  • Zinc selenide (ZnSe) for 3-5 µm and 8-12 µm
  • Zinc sulfide (ZnS) for 8-12 µm
  • Zinc sulfide multispectral (ZnS MS) for 3-5 µm and 8-12 µm

Communications Optics:

  • Surface size: 1-3 mm
  • Standard 200 GHz, 100 GHz, 50 GHz DWDM filters
  • Standard high-angle CWDM filters and CWDM skip filters
  • Waveband mux/demux “skip-0” filters
  • Dual-band, multiband CWDM/LAN-WDM/DWDM filters
  • Optical supervisory channel filters
  • Tap filters: O- through L-bands
  • Linear transmittance filters
  • Gain flattening and equalization filters

Life Sciences Optics:

  • Surface size: 2-250 mm
  • Substrate materials: all glass types
  • Spectral range: 340 nm to 14 µm
  • Edge steepness (T: 50%, OD > 4): <0.5%
  • Center wavelength: ±0.5 nm to 2 nm
  • Bandwidth: 1 nm to broadband

II-VI’s thin-film coatings are designed in close collaboration with our customers to achieve optimal solutions.