Near Infrared Polarizers.
Abstract
Construction of infrared polarizers with wire grids of better than 4300 l/mm is accomplished by a four step process. The first step is to coat a layer of conductive material on a substrate. The substrate should have high transmission for the spectral region desired and the conductive coating should be highly conductive at that same spectral region. Next, a layer of photoresist is deposited over the conductive coating. The photoresist is then exposed in the third step to an interference pattern of two beams from a laser source which records a plane grating in the photoresist. The photoresist is then developed to produce a surface relief grating. The last step requires milling the surface relief grating with commercial ion milling techniques to reproduce the relief surface on the transparent conductive material. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1980
- Accession Number
- ADD007560
Entities
People
- Ronald A. Ferrante
Organizations
- United States Department of the Navy