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High-performance mid-IR metasurface optics (Conference Presentation)

Paper Abstract

The mid-infrared (mid-IR) spectral region contains the characteristic vibrational absorption bands of most molecules as well as two atmospheric transmission windows, and is therefore of critical importance to many biomedical, military, and industrial applications such as spectroscopic sensing, thermal imaging, free-space communications, and infrared countermeasures. Metasurface devices operating in the mid-IR potentially offer significantly reduced size, weight, and cost compared to traditional bulk optics, but they are also challenged with unique material and processing requirements. By combining high-index, broadband transparent dielectric materials with a Huygens metasurface design, we have experimentally realized high-performance metasurface devices with a low-profile, deep sub-wavelength thickness. Based on the platform, we demonstrated single-layer metalenses with focusing efficiencies up to 75% and diffraction-limited performance over a record field of view close to 180 degrees. These meta-optical devices can provide significantly enhanced design flexibility for future infrared optical systems.

Paper Details

Date Published: 9 September 2019
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Proc. SPIE 11080, Metamaterials, Metadevices, and Metasystems 2019, 1108005 (9 September 2019); doi: 10.1117/12.2527527
Show Author Affiliations
Mikhail Shalaginov, Massachusetts Institute of Technology (United States)
Sensong An, Univ. of Massachusetts Lowell (United States)
Hanyu Zheng, Massachusetts Institute of Technology (United States)
Li Zhang, Massachusetts Institute of Technology (United States)
Clayton Fowler, Univ. of Massachusetts Lowell (United States)
Jun Ding, Univ. of Massachusetts Lowell (United States)
Tian Gu, Massachusetts Institute of Technology (United States)
Hualiang Zhang, Univ. of Massachusetts Lowell (United States)
Juejun Hu, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 11080:
Metamaterials, Metadevices, and Metasystems 2019
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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