Large field-of-view thermal imaging via all-silicon meta-optics

Anna Wirth-Singh, Johannes E. Fröch, Zheyi Han, Luocheng Huang, Saswata Mukherjee, Zhihao Zhou, Zachary Coppens, Karl F. Böhringer, Arka Majumdar

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A broad range of imaging and sensing technologies in the infrared require large field-of-view (FoV) operation. To achieve this, traditional refractive systems often employ multiple elements to compensate for aberrations, which leads to excess size, weight, and cost. For many applications, including night vision eye-wear, air-borne surveillance, and autonomous navigation for unmanned aerial vehicles, size and weight are highly constrained. Sub-wavelength diffractive optics, also known as meta-optics, can dramatically reduce the size, weight, and cost of these imaging systems, as meta-optics are significantly thinner and lighter than traditional refractive lenses. Here, we demonstrate 80 FoV thermal imaging in the long-wavelength infrared regime (8–12 µm) using an all-silicon meta-optic with an entrance aperture and lens focal length of 1 cm.

Original languageEnglish
Pages (from-to)5467-5474
Number of pages8
JournalApplied Optics
Volume62
Issue number20
DOIs
StatePublished - 1 Jul 2023
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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