Optical Coatings

Reflective and AR Coatings, Available On-Site

Streamline your project's budget and timeline with our in-house optical coating services. LaCroix's modern 4,300 sq. ft. coating facility handles coating projects with skillful expertise, the latest coating chambers, and stringent quality controls.

From anti-reflective coatings and HRs to beam splitters and cut-off filters, high-performance coatings deliver exceptional value.

Deposition Coating Methods

  • Resistive heat
  • Electron-beam
  • Ion-assisted
  • Plasma-assisted

Coating Facility Highlights

  • 4,300 sq. ft. 
  • 8 coating chambers
  • Environmental testing 
  • Laser damage threshold testing

Optical coatings can be deposited in a wide working range of 250 to 2500nm. 

Stock and Custom Optical Coatings

Choose a stock coating from our collection of 400 proven designs, often reduce your coating cost by increasing the efficient use of the coating chamber.

For custom coatings, you'll work with our Coatings team who uses specialized software to design a coating to meet your spectral and environmental performance requirements.


  • Protected Aluminum
  • Enhanced Aluminum
  • Gold
  • Dielectric
    • Long wave pass, Cold Mirror
    • Short wave pass, Hot Mirror
    • Bandpass Filters
    • Notch Filters
    • Dichroic (Color)
    • Beamsplitters, Polarizing and Non-Polarizing
    • Polarizers

AR Coatings

  • ‘V’ Coats
  • Broadband
  • Dual Band
  • Multiband
  • Ultra-Broadband
  • Hydrophobic
  • MgF2
Coating Specifications High Reflectors Anti-Reflection
Wavelength Range 250 – 2500 nm 250 – 2500nm
Damage Threshold
Pulsed 20 ns, 20 Hz @ 1064nm 40 J/cm2 40 J/cm2
CW 1 MW/cm2 1 MW/cm2

Environmental Testing

We conduct in-house environmental testing to ISO 9211-3:2008E, MIL-F-48616, MIL-O-13830A, MILC-675C, MIL-C-48497A, and MIL-M-13508C specifications for:

  • Adhesion
  • Abrasion
  • Humidity
  • Temperature
  • Solubility

Laser damage testing is also available upon customer request.

Test Equipment


  • Perkin Elmer Lambda 950
  • Perkin Elmer Lambda 900
  • Perkin Elmer Lambda 35


  • Thermatron Temperature Chamber
  • Salt Spray Chamber
  • Humidity Chamber
Download MIL-PRF-13830B Specifications