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Title: Designing graphene absorption in a multispectral plasmon-enhanced infrared detector

Here, we have examined graphene absorption in a range of graphene-based infrared devices that combine either monolayer or bilayer graphene with three different gate dielectrics. Electromagnetic simulations show that the optical absorption in graphene in these devices, an important factor in a functional graphene-based detector, is strongly dielectric-dependent. Our simulations reveal that plasmonic excitation in graphene can significantly influence the percentage of light absorbed in the entire device, as well as the graphene layer itself, with graphene absorption exceeding 25% in regions where plasmonic excitation occurs. Notably, the dielectric environment of graphene has a dramatic influence on the strength and wavelength range over which the plasmons can be excited, making dielectric choice paramount to final detector tunability and sensitivity.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
Publication Date:
Report Number(s):
SAND-2017-5294J
Journal ID: ISSN 1094-4087; OPEXFF; 653418
Grant/Contract Number:
AC04-94AL85000; NA0003525
Type:
Accepted Manuscript
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 25; Journal Issue: 11; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1360932

Goldflam, Michael D., Fei, Zhe, Ruiz, Isaac, Howell, Stephen W., Davids, Paul S., Peters, David W., and Beechem, Thomas E.. Designing graphene absorption in a multispectral plasmon-enhanced infrared detector. United States: N. p., Web. doi:10.1364/oe.25.012400.
Goldflam, Michael D., Fei, Zhe, Ruiz, Isaac, Howell, Stephen W., Davids, Paul S., Peters, David W., & Beechem, Thomas E.. Designing graphene absorption in a multispectral plasmon-enhanced infrared detector. United States. doi:10.1364/oe.25.012400.
Goldflam, Michael D., Fei, Zhe, Ruiz, Isaac, Howell, Stephen W., Davids, Paul S., Peters, David W., and Beechem, Thomas E.. 2017. "Designing graphene absorption in a multispectral plasmon-enhanced infrared detector". United States. doi:10.1364/oe.25.012400. https://www.osti.gov/servlets/purl/1360932.
@article{osti_1360932,
title = {Designing graphene absorption in a multispectral plasmon-enhanced infrared detector},
author = {Goldflam, Michael D. and Fei, Zhe and Ruiz, Isaac and Howell, Stephen W. and Davids, Paul S. and Peters, David W. and Beechem, Thomas E.},
abstractNote = {Here, we have examined graphene absorption in a range of graphene-based infrared devices that combine either monolayer or bilayer graphene with three different gate dielectrics. Electromagnetic simulations show that the optical absorption in graphene in these devices, an important factor in a functional graphene-based detector, is strongly dielectric-dependent. Our simulations reveal that plasmonic excitation in graphene can significantly influence the percentage of light absorbed in the entire device, as well as the graphene layer itself, with graphene absorption exceeding 25% in regions where plasmonic excitation occurs. Notably, the dielectric environment of graphene has a dramatic influence on the strength and wavelength range over which the plasmons can be excited, making dielectric choice paramount to final detector tunability and sensitivity.},
doi = {10.1364/oe.25.012400},
journal = {Optics Express},
number = 11,
volume = 25,
place = {United States},
year = {2017},
month = {5}
}