Custom Coatings

custom coatings

Optical Coatings

Our ability to custom coat your optics in-house provides you with an all-inclusive optics manufacturing partner. This means we can personally ensure quality throughout and meet quicker turnaround times. LaCroix’s engineers can use a stock coating or create a custom coating to meet your specifications. From ARs and HRs to beamsplitters and cut-off filters, high-performance coatings deliver exceptional value.

In-House Coating Facility

Our in-house coating facility, recently expanded to 4,300 sq. ft. (Sep 2017) houses seven coating chambers. Deposition coating technologies include resistive heat, electron-beam, ion-assisted, and plasma-assisted. Coatings can be deposited in a wide working range of 300 to 2100nm.

Coating Design

We have an extensive inventory of over 400 coating designs our engineers can use to provide a stock solution to your requirements. Using a stock coating can often reduce your coating cost, as it increases the efficient use of the coating chamber. In the event a custom design is required, our Coating Engineer uses specialized software to design a coating to meet your spectral and environmental performance requirements.

Reflective

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

Anti-Reflective

  • ‘V’ Coats
  • Broadband
  • Dual Band
  • Multiband
  • Ultra-Broadband
  • Hydrophobic
  • MgF2
Coating Specifications High Reflectors Anti-Reflection
Wavelength Range 200 – 2100 nm 300 – 2100 nm
Damage Threshold
Plused 20 ns, 20 Hz @ 1064nm 40 J/cm2 40 J/cm2
CW 1 MW/cm2 1 MW/cm2

Testing

Available Services

We conduct in-house environmental testing to ISO 9211-1:1994E, MIL-F-48616, MIL-O-13830A, MILC-675C, MIL-C-48497A, and MIL-M-13508C specifications for, but not limited to: adhesion, abrasion, humidity, temperature and solubility. Laser damage testing is also available upon customer request.

Test Equipment

Spectrophotometers

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

Environmental

  • Thermatron Oven
  • Salt Spray Chamber
  • Humidity Chamber

High performance coatings

From ARs (anti-reflective) to HRs (high reflectors), high-performance coatings deliver exceptional value. Our optical coating technologies include resistive heat deposition, electron-beam deposition, ion-assisted deposition, and plasma-assisted deposition. Our customers can choose from over 180 existing designs or have one custom-designed based on required performance. The ability to coat on-site as part of the total production process allows us to meet tighter lead times and ensure quality. Our high-damage threshold coatings have competed and won against some of the best coating departments in the world.

 

Download MIL-PRF-13830B Specifications