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Title: Zeroth order Fabry-Perot resonance enabled ultra-thin perfect light absorber using percolation aluminum and silicon nanofilms

Journal Article · · Optical Materials Express
DOI:https://doi.org/10.1364/OME.6.001032· OSTI ID:1266784
 [1];  [2];  [1]
  1. Univ. of Alabama in Huntsville, Huntsville, AL (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Here, we demonstrated perfect light absorption in optical nanocavities made of ultra-thin percolation aluminum and silicon films deposited on an aluminum surface. The total layer thickness of the aluminum and silicon films is one order of magnitude less than perfect absorption wavelength in the visible spectral range. The ratio of silicon cavity layer thickness to perfect absorption wavelength decreases as wavelength decreases due to the increased phase delays at silicon-aluminum boundaries at shorter wavelengths. It is explained that perfect light absorption is due to critical coupling of incident wave to the fundamental Fabry-Perot resonance mode of the structure where the round trip phase delay is zero. Simulations were performed and the results agree well with the measurement results.

Research Organization:
Sandia National Lab. (SNL-CA), Livermore, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
2014-67022-21618; AC04-94AL85000
OSTI ID:
1266784
Journal Information:
Optical Materials Express, Vol. 6, Issue 4; ISSN 2159-3930
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

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Cited By (4)

Polarization‐independent multiband metamaterials absorber by fundamental cavity mode of multilayer microstructure journal June 2019
Review of Metasurface Plasmonic Structural Color journal October 2016
Numerical Study of an Au-ZnO-Al Perfect Absorber for a Color Filter with a High Quality Factor journal October 2019
Electrically tunable perfect light absorbers as color filters and modulators journal February 2018