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Title: Probing metamaterials with structured light

Journal Article · · Optics Express
DOI:https://doi.org/10.1364/OE.24.026249· OSTI ID:1330966
 [1];  [1];  [1];  [1]
  1. State Univ. of New York (SUNY), Buffalo, NY (United States). Dept. of Electrical Engineering

Photonic metamaterials and metasurfaces are nanostructured optical materials engineered to enable properties that have not been found in nature. Optical characterization of these structures is a challenging task. We report a reliable technique that is particularly useful for characterization of phase properties introduced by small and spatially inhomogeneous samples of metamaterials and metasurfaces. The proposed structured light, or vortex based interferometric method is used to directly visualize phase changes introduced by subwavelength-thick nanostructures. In order to demonstrate the efficiency of the proposed technique, we designed and fabricated several metasurface samples consisting of metal nano-antennas introducing different phase shifts and experimentally measured phase shifts of the transmitted light. The experimental results are in good agreement with numerical simulations and with the designed properties of the antenna arrays. Finally, due to the presence of the singularity in the vortex beam, one of the potential applications of the proposed approach based on structured light is step-by-step probing of small fractions of the micro-scale samples or images.

Research Organization:
State Univ. of New York (SUNY), Buffalo, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0014485
OSTI ID:
1330966
Journal Information:
Optics Express, Vol. 24, Issue 23; ISSN 1094-4087
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

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Cited By (4)

Reconfiguring structured light beams using nonlinear metasurfaces journal January 2018
Characterization of Dynamic and Nanoscale Materials and Metamaterials with Continuously Referenced Interferometry journal September 2019
Broadband polarization conversion with anisotropic plasmonic metasurfaces journal August 2017
Reconfiguring structured light beams using nonlinear metasurfaces text January 2018