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AR coatings


EMSL Project ID
12306

Abstract

Custom anti-reflection coatings, which also perform as barrier layers, need to be deposited on chalcogenide glass substrates. LWIR (long wavelength infrared)AR coatings require materials that need to be e-beam evaporated. Since layer thickness is critical to the success of the AR designs, a crystal monitor will be utilized. An ion gun will be installed to assist in substrate cleaning prior to desposition. EMSL contains a chamber that can be used to e-beam evaporate multiple materials without breaking vacuum. This work is a vital part of the multi-year HYPAIR (Hybrid Prototype Airborne Infrared) Photonics project headed by Norm Anheier. The materials being deposited in this work will include, but may not be limited to the following at this time: CIROM-IRX and yttrium oxide, both available from CERAC. This project is funded for the next 2 years and will require access to the e-beam chamber periodically over that time frame. I will require access to the system initially for 3 weeks in January to calibrate the materials for the correct layer thickness and fine tune the process, as well as produce a first cut at deliverable coatings by the end of Jan. The system will be thoroughly cleaned prior to and after this initial 3-week period and after each subsequent use. A CPP will be submitted for approval prior to use of these materials.

Project Details

Project type
Exploratory Research
Start Date
2005-01-10
End Date
2006-03-13
Status
Closed

Team

Principal Investigator

Wendy Bennett
Institution
Pacific Northwest National Laboratory

Team Members

Charles Bonham
Institution
Pacific Northwest National Laboratory

Dean Matson
Institution
Pacific Northwest National Laboratory