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Title: Compact folded metasurface spectrometer

Abstract

An optical design space that can highly benefit from the recent developments in metasurfaces is the folded optics architecture where light is confined between reflective surfaces, and the wavefront is controlled at the reflective interfaces. In this manuscript, we introduce the concept of folded metasurface optics by demonstrating a compact spectrometer made from a 1-mm-thick glass slab with a volume of 7 cubic millimeters. The spectrometer has a resolution of ~1.2 nm, resolving more than 80 spectral points from 760 to 860 nm. The device is composed of three reflective dielectric metasurfaces, all fabricated in a single lithographic step on one side of a substrate, which simultaneously acts as the propagation space for light. As a result, the folded metasystem design can be applied to many optical systems, such as optical signal processors, interferometers, hyperspectral imagers, and computational optical systems, significantly reducing their sizes and increasing their mechanical robustness and potential for integration.

Authors:
 [1]; ORCiD logo [1];  [2];  [1];  [1]; ORCiD logo [1]
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States). T. J. Watson Lab. of Applied Physics and Kavli Nanoscience Inst.
  2. California Inst. of Technology (CalTech), Pasadena, CA (United States). T. J. Watson Lab. of Applied Physics and Kavli Nanoscience Inst.; Univ. of Massachusetts, Amherst, MA (United States). Dept. of Electrical and Computer Engineering
Publication Date:
Research Org.:
California Inst. of Tech., Pasadena, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1483417
Grant/Contract Number:  
SC0001293
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Faraji-Dana, MohammadSadegh, Arbabi, Ehsan, Arbabi, Amir, Kamali, Seyedeh Mahsa, Kwon, Hyounghan, and Faraon, Andrei. Compact folded metasurface spectrometer. United States: N. p., 2018. Web. doi:10.1038/s41467-018-06495-5.
Faraji-Dana, MohammadSadegh, Arbabi, Ehsan, Arbabi, Amir, Kamali, Seyedeh Mahsa, Kwon, Hyounghan, & Faraon, Andrei. Compact folded metasurface spectrometer. United States. doi:10.1038/s41467-018-06495-5.
Faraji-Dana, MohammadSadegh, Arbabi, Ehsan, Arbabi, Amir, Kamali, Seyedeh Mahsa, Kwon, Hyounghan, and Faraon, Andrei. Wed . "Compact folded metasurface spectrometer". United States. doi:10.1038/s41467-018-06495-5. https://www.osti.gov/servlets/purl/1483417.
@article{osti_1483417,
title = {Compact folded metasurface spectrometer},
author = {Faraji-Dana, MohammadSadegh and Arbabi, Ehsan and Arbabi, Amir and Kamali, Seyedeh Mahsa and Kwon, Hyounghan and Faraon, Andrei},
abstractNote = {An optical design space that can highly benefit from the recent developments in metasurfaces is the folded optics architecture where light is confined between reflective surfaces, and the wavefront is controlled at the reflective interfaces. In this manuscript, we introduce the concept of folded metasurface optics by demonstrating a compact spectrometer made from a 1-mm-thick glass slab with a volume of 7 cubic millimeters. The spectrometer has a resolution of ~1.2 nm, resolving more than 80 spectral points from 760 to 860 nm. The device is composed of three reflective dielectric metasurfaces, all fabricated in a single lithographic step on one side of a substrate, which simultaneously acts as the propagation space for light. As a result, the folded metasystem design can be applied to many optical systems, such as optical signal processors, interferometers, hyperspectral imagers, and computational optical systems, significantly reducing their sizes and increasing their mechanical robustness and potential for integration.},
doi = {10.1038/s41467-018-06495-5},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {Wed Oct 10 00:00:00 EDT 2018},
month = {Wed Oct 10 00:00:00 EDT 2018}
}

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