Accession Number:

AD1157963

Title:

Advanced Methods to Substantially Achieve the Multi-Functional Infrared Sensors Technologies for Multi-Spectral and Polarimetric Infrared Images

Descriptive Note:

[Technical Report, Final Report]

Corporate Author:

KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Personal Author(s):

Report Date:

2021-11-29

Pagination or Media Count:

13

Abstract:

We have designed, fabricated and characterized surface plasmonic structures for multispectral and polarization imaging sensors. We introduced two periodic array structures of square coaxial aperture SCA and quasi-three-dimensional circular coaxial aperture quasi-3D CCA onto InAsGaSb type-II superlattice T2SL photodetectors. By adjusting the pitch of the array, multispectral filtering of the SCA and quasi-3D CCA integrated T2SL detectors is successfully performed at the detector level in the spectral ranges of 2.44 m and 35 m, respectively. In addition, we have developed a fabrication process for large-area 22 super pixelated subwavelength gold gratings with four different orientations of 0, 45, 90, and 135 degrees, using UV nanoimprint lithography. This process can be adopted as a promising technique to fabricate next-generation large-format polarimetric imagers with high extinction ratio.

Descriptors:

Subject Categories:

  • Optics
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

[A, Approved For Public Release]