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Title: Multiwavelength metasurfaces through spatial multiplexing

Abstract

Metasurfaces are two-dimensional arrangements of optical scatterers rationally arranged to control optical wavefronts. Despite the significant advances made in wavefront engineering through metasurfaces, most of these devices are designed for and operate at a single wavelength. Here we show that spatial multiplexing schemes can be applied to increase the number of operation wavelengths. We use a high contrast dielectric transmittarray platform with amorphous silicon nano-posts to demonstrate polarization insensitive metasurface lenses with a numerical aperture of 0.46, that focus light at 915 and 1550 nm to the same focal distance. We investigate two different methods, one based on large scale segmentation and one on meta-atom interleaving, and compare their performances. An important feature of this method is its simple generalization to adding more wavelengths or new functionalities to a device. Furthermore, it provides a relatively straightforward method for achieving multi-functional and multiwavelength metasurface devices.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC), Washington, D.C. (United States). Light-Material Interactions in Energy Conversion (LMI)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1388847
Grant/Contract Number:  
SC0001293
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal Issue: 1; Related Information: LMI partners with California Institute of Technology (lead); Harvard University; University of Illinois, Urbana-Champaign; Lawrence Berkeley National Laboratory; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; solar (photovoltaic); solid state lighting; phonons; thermal conductivity; electrodes - solar; materials and chemistry by design; optics; synthesis (novel materials); synthesis (self-assembly)

Citation Formats

Arbabi, Ehsan, Arbabi, Amir, Kamali, Seyedeh Mahsa, Horie, Yu, and Faraon, Andrei. Multiwavelength metasurfaces through spatial multiplexing. United States: N. p., 2016. Web. doi:10.1038/srep32803.
Arbabi, Ehsan, Arbabi, Amir, Kamali, Seyedeh Mahsa, Horie, Yu, & Faraon, Andrei. Multiwavelength metasurfaces through spatial multiplexing. United States. doi:10.1038/srep32803.
Arbabi, Ehsan, Arbabi, Amir, Kamali, Seyedeh Mahsa, Horie, Yu, and Faraon, Andrei. Tue . "Multiwavelength metasurfaces through spatial multiplexing". United States. doi:10.1038/srep32803. https://www.osti.gov/servlets/purl/1388847.
@article{osti_1388847,
title = {Multiwavelength metasurfaces through spatial multiplexing},
author = {Arbabi, Ehsan and Arbabi, Amir and Kamali, Seyedeh Mahsa and Horie, Yu and Faraon, Andrei},
abstractNote = {Metasurfaces are two-dimensional arrangements of optical scatterers rationally arranged to control optical wavefronts. Despite the significant advances made in wavefront engineering through metasurfaces, most of these devices are designed for and operate at a single wavelength. Here we show that spatial multiplexing schemes can be applied to increase the number of operation wavelengths. We use a high contrast dielectric transmittarray platform with amorphous silicon nano-posts to demonstrate polarization insensitive metasurface lenses with a numerical aperture of 0.46, that focus light at 915 and 1550 nm to the same focal distance. We investigate two different methods, one based on large scale segmentation and one on meta-atom interleaving, and compare their performances. An important feature of this method is its simple generalization to adding more wavelengths or new functionalities to a device. Furthermore, it provides a relatively straightforward method for achieving multi-functional and multiwavelength metasurface devices.},
doi = {10.1038/srep32803},
journal = {Scientific Reports},
number = 1,
volume = 6,
place = {United States},
year = {Tue Sep 06 00:00:00 EDT 2016},
month = {Tue Sep 06 00:00:00 EDT 2016}
}

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Cited by: 12 works
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Works referenced in this record:

Meep: A flexible free-software package for electromagnetic simulations by the FDTD method
journal, March 2010

  • Oskooi, Ardavan F.; Roundy, David; Ibanescu, Mihai
  • Computer Physics Communications, Vol. 181, Issue 3, p. 687-702
  • DOI: 10.1016/j.cpc.2009.11.008