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Title: Tunable dual-band graphene-based infrared reflectance filter

Here, we experimentally demonstrated an actively tunable optical filter that controls the amplitude of reflected long-wave-infrared light in two separate spectral regions concurrently. Our device exploits the dependence of the excitation energy of plasmons in a continuous and unpatterned sheet of graphene on the Fermi-level, which can be controlled via conventional electrostatic gating. The filter enables simultaneous modification of two distinct spectral bands whose positions are dictated by the device geometry and graphene plasmon dispersion. Within these bands, the reflected amplitude can be varied by over 15% and resonance positions can be shifted by over 90 cm –1. Electromagnetic simulations verify that tuning arises through coupling of incident light to graphene plasmons by a grating structure. Importantly, the tunable range is determined by a combination of graphene properties, device structure, and the surrounding dielectrics, which dictate the plasmon dispersion. Thus, the underlying design shown here is applicable across a broad range of infrared frequencies.
Authors:
 [1] ;  [1] ; ORCiD logo [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Report Number(s):
SAND-2018-3633J
Journal ID: ISSN 1094-4087; OPEXFF; 663968
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 26; Journal Issue: 7; 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:
47 OTHER INSTRUMENTATION
OSTI Identifier:
1444096

Goldflam, Michael D., Ruiz, Isaac, Howell, Stephen W., Wendt, Joel R., Sinclair, Michael B., Peters, David W., and Beechem, Thomas E.. Tunable dual-band graphene-based infrared reflectance filter. United States: N. p., Web. doi:10.1364/OE.26.008532.
Goldflam, Michael D., Ruiz, Isaac, Howell, Stephen W., Wendt, Joel R., Sinclair, Michael B., Peters, David W., & Beechem, Thomas E.. Tunable dual-band graphene-based infrared reflectance filter. United States. doi:10.1364/OE.26.008532.
Goldflam, Michael D., Ruiz, Isaac, Howell, Stephen W., Wendt, Joel R., Sinclair, Michael B., Peters, David W., and Beechem, Thomas E.. 2018. "Tunable dual-band graphene-based infrared reflectance filter". United States. doi:10.1364/OE.26.008532. https://www.osti.gov/servlets/purl/1444096.
@article{osti_1444096,
title = {Tunable dual-band graphene-based infrared reflectance filter},
author = {Goldflam, Michael D. and Ruiz, Isaac and Howell, Stephen W. and Wendt, Joel R. and Sinclair, Michael B. and Peters, David W. and Beechem, Thomas E.},
abstractNote = {Here, we experimentally demonstrated an actively tunable optical filter that controls the amplitude of reflected long-wave-infrared light in two separate spectral regions concurrently. Our device exploits the dependence of the excitation energy of plasmons in a continuous and unpatterned sheet of graphene on the Fermi-level, which can be controlled via conventional electrostatic gating. The filter enables simultaneous modification of two distinct spectral bands whose positions are dictated by the device geometry and graphene plasmon dispersion. Within these bands, the reflected amplitude can be varied by over 15% and resonance positions can be shifted by over 90 cm–1. Electromagnetic simulations verify that tuning arises through coupling of incident light to graphene plasmons by a grating structure. Importantly, the tunable range is determined by a combination of graphene properties, device structure, and the surrounding dielectrics, which dictate the plasmon dispersion. Thus, the underlying design shown here is applicable across a broad range of infrared frequencies.},
doi = {10.1364/OE.26.008532},
journal = {Optics Express},
number = 7,
volume = 26,
place = {United States},
year = {2018},
month = {3}
}