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Title: Monolithically-Fabricated Tunable Long-Wave Infrared Detectors Based on Dynamic Graphene Metasurfaces.

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/5.0007780· OSTI ID:1634796
ORCiD logo [1];  [1];  [2];  [1]; ORCiD logo [1];  [1];  [1];  [1];  [1]; ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [1];  [3];  [1];  [1];  [1];  [4]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Naval Surface Warfare Center (NSWC), Crane, IN (United States)
  3. Air Force Research Lab. (AFRL), Kirtland AFB (United States). Space Vehicles Directorate
  4. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Center for Integrated Technologies, Albuquerque, NM (United States)
+ Show Author Affiliations

In this paper, the design, fabrication, and characterization of an actively tunable long-wave infrared detector, made possible through direct integration of a graphene-enabled metasurface with a conventional type-II superlattice infrared detector, are reported. This structure allows for post-fabrication tuning of the detector spectral response through voltage-induced modification of the carrier density within graphene and, therefore, its plasmonic response. These changes modify the transmittance through the metasurface, which is fabricated monolithically atop the detector, allowing for spectral control of light reaching the detector. Importantly, this structure provides a fabrication-controlled alignment of the metasurface filter to the detector pixel and is entirely solid-state. Using single pixel devices, relative changes in the spectral response exceeding 8% have been realized. These proof-of-concept devices present a path toward solid-state hyperspectral imaging with independent pixel-to-pixel spectral control through a voltage-actuated dynamic response.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC04-94AL85000; NA0003525; SAND-2020-5506J
OSTI ID:
1634796
Alternate ID(s):
OSTI ID: 1617986
Report Number(s):
SAND-2020-5506J; 686344; TRN: US2201395
Journal Information:
Applied Physics Letters, Vol. 116, Issue 19; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

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