Low SWaP-C hyperspectral metamaterial spectrometer (MMS) for narrow-band, wide angle-of-incidence MWIR atmospheric sensing

Igor Bendoym; Lori Lepak; James Leitch; Jeff Applegate; David Crouse

doi:10.1117/12.2632794

30 May 2022 Low SWaP-C hyperspectral metamaterial spectrometer (MMS) for narrow-band, wide angle-of-incidence MWIR atmospheric sensing

Igor Bendoym, Lori Lepak, James Leitch, Jeff Applegate, David Crouse

Author Affiliations +

Proceedings Volume 12091, Image Sensing Technologies: Materials, Devices, Systems, and Applications IX; 120910J (2022) https://doi.org/10.1117/12.2632794
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Conference Poster

Abstract

We have developed a low SWaP-C enabling Metamaterial Spectrometer (MMS) device for hyperspectral imaging in the MWIR. Our chip-based MMS device couples a Distributed Bragg Stack filter with a sub-wavelength dielectric resonator metasurface. The former gives the device a narrow passband, while the latter can be pixelated into an arbitrary number of parallel spectral channels, each with an independently engineerable center wavelength and bandwidth to create a hyperspectral or multispectral filter. The all-dielectric structure provides low optical loss vs. metallic plasmonic resonators. The metasurface resonators are engineered to accept light across a wide angle-of-incidence cone while being integrated directly into existing focal plane array (FPA) detectors. A wide acceptance cone of light eliminates the need for collimating optics, thereby reducing the SWaP requirements of the MMS relative to competing technologies. The MMS can be fabricated on a wafer scale using standard nanofabrication techniques, which are cost-effective for highvolume manufacturing. Although our initial prototype has been implemented in the MWIR, the generalized MMS structure can be implemented in other infrared spectral ranges by via appropriate choices of materials and rescaling of dimensions. Potential commercial applications of the hyperspectral MMS include environmental monitoring, medical diagnostics, antiterrorism, forensics, and food safety.

Citation Download Citation

Igor Bendoym, Lori Lepak, James Leitch, Jeff Applegate, and David Crouse "Low SWaP-C hyperspectral metamaterial spectrometer (MMS) for narrow-band, wide angle-of-incidence MWIR atmospheric sensing", Proc. SPIE 12091, Image Sensing Technologies: Materials, Devices, Systems, and Applications IX, 120910J (30 May 2022); https://doi.org/10.1117/12.2632794

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