Accession Number:

ADD007560

Title:

Near Infrared Polarizers.

Descriptive Note:

Patent Application,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1980-07-01

Pagination or Media Count:

13.0

Abstract:

Construction of infrared polarizers with wire grids of better than 4300 lmm 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

Subject Categories:

  • Lasers and Masers
  • Infrared Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE