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Accession Number:

AD1157963

Title:

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

Author(s):

• Lee, Sang J.

Author Organization(s):

• KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Report Date:

2021-11-29

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 InAs/GaSb 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.

Document Type:

Conference:

Journal:

Pages:

13

File Size:

1.72MB

Contracts:

Grants:

Descriptors:

Identifiers:

• sca(square coaxial aperture)
• polarimetric imagers

SubjectCategory:

• Physics
• Physics

Communities of Interest:

• Advanced Electronics

Distribution Statement:

Approved For Public Release

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