Optical Coatings
Our ability to custom coat your optics in-house provides you with an all-inclusive optics manufacturing partner. As a result, we can personally ensure quality throughout and meet quick turnaround times. LaCroix’s engineers can use a stock optical coating or create a custom coating to meet your specifications. From anti-reflective coating 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) and houses seven coating chambers. Deposition coating technologies include resistive heat, electron-beam, ion-assisted, and plasma-assisted. Optical 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 stock optical coatings 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 | ||
| Pulsed 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 the required performance. The ability to coat on-site as part of the complete 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.
