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Single-shot on-chip spectral sensors based on photonic crystal slabs.

ABSTRACT: Miniaturized spectrometers have significant potential for portable applications such as consumer electronics, health care, and manufacturing. These applications demand low cost and high spectral resolution, and are best enabled by single-shot free-space-coupled spectrometers that also have sufficient spatial resolution. Here, we demonstrate an on-chip spectrometer that can satisfy all of these requirements. Our device uses arrays of photodetectors, each of which has a unique responsivity with rich spectral features. These responsivities are created by complex optical interference in photonic-crystal slabs positioned immediately on top of the photodetector pixels. The spectrometer is completely complementary metal-oxide-semiconductor (CMOS) compatible and can be mass produced at low cost.

SUBMITTER: Wang Z

PROVIDER: S-EPMC6399238 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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Single-shot on-chip spectral sensors based on photonic crystal slabs.

Wang Zhu Z Yi Soongyu S Chen Ang A Zhou Ming M Luk Ting Shan TS James Anthony A Nogan John J Ross Willard W Joe Graham G Shahsafi Alireza A Wang Ken Xingze KX Kats Mikhail A MA Yu Zongfu Z

Nature communications 20190304 1

Miniaturized spectrometers have significant potential for portable applications such as consumer electronics, health care, and manufacturing. These applications demand low cost and high spectral resolution, and are best enabled by single-shot free-space-coupled spectrometers that also have sufficient spatial resolution. Here, we demonstrate an on-chip spectrometer that can satisfy all of these requirements. Our device uses arrays of photodetectors, each of which has a unique responsivity with ri ...[more]

PMID: 30833569

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