Giant phase retardation of terahertz waves by resonant hyperbolic metasurface

Seojoo Lee; Wontae Kim; Ji Hun Kang; Bongjoo Kang; Fabian Rotermund; Q. Han Park

doi:10.1117/12.2288060

Giant phase retardation of terahertz waves by resonant hyperbolic metasurface

Seojoo Lee, Wontae Kim, Ji Hun Kang, Bongjoo Kang, Fabian Rotermund, Q. Han Park

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

Due to the relatively weak birefringence of natural materials in terahertz regime, metasurfaces have been proposed for compact terahertz phase modulators since they show effectively strong birefringence only with ultrathin structures. However, previous designs of metasurface show limited phase modulation reaching only up to the quarter-wavelength phase, and there has been no single metasurface design that works for a terahertz half-waveplate. Here, we present a metasurface that modulates the phase variably up to 180 degrees. The phase modulation is achieved by a hyperbolic metasurface composed of periodically arrayed rectangular metal rings with different periods for horizontal and vertical axis. By controlling each period, we show that our hyperbolic metasurface can possess large positive and negative permittivity values for horizontal and vertical axis and the phase shift can reach up to the 180 degrees. To check the validity of our design, we fabricate reconfigurable metasurface films and demonstrate the phase modulation 90 to 180 degrees. All results show good agreement with numerical simulation results.

Original language	English
Title of host publication	Photonic and Phononic Properties of Engineered Nanostructures VIII
Editors	Shawn-Yu Lin, Ali Adibi, Axel Scherer
Publisher	SPIE
ISBN (Electronic)	9781510615670
DOIs	https://doi.org/10.1117/12.2288060
Publication status	Published - 2018
Event	Photonic and Phononic Properties of Engineered Nanostructures VIII 2018 - San Francisco, United States Duration: 2018 Jan 29 → 2018 Feb 1

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10541
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Photonic and Phononic Properties of Engineered Nanostructures VIII 2018
Country/Territory	United States
City	San Francisco
Period	18/1/29 → 18/2/1

Bibliographical note

Publisher Copyright:
© 2018 SPIE.

Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.

Keywords

metamaterials
phase retardation
terahertz
waveplates

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2288060

Cite this

Lee, S., Kim, W., Kang, J. H., Kang, B., Rotermund, F., & Park, Q. H. (2018). Giant phase retardation of terahertz waves by resonant hyperbolic metasurface. In S.-Y. Lin, A. Adibi, & A. Scherer (Eds.), Photonic and Phononic Properties of Engineered Nanostructures VIII Article 1054122 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10541). SPIE. https://doi.org/10.1117/12.2288060

Giant phase retardation of terahertz waves by resonant hyperbolic metasurface. / Lee, Seojoo; Kim, Wontae; Kang, Ji Hun et al.
Photonic and Phononic Properties of Engineered Nanostructures VIII. ed. / Shawn-Yu Lin; Ali Adibi; Axel Scherer. SPIE, 2018. 1054122 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10541).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Lee, S, Kim, W, Kang, JH, Kang, B, Rotermund, F & Park, QH 2018, Giant phase retardation of terahertz waves by resonant hyperbolic metasurface. in S-Y Lin, A Adibi & A Scherer (eds), Photonic and Phononic Properties of Engineered Nanostructures VIII., 1054122, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10541, SPIE, Photonic and Phononic Properties of Engineered Nanostructures VIII 2018, San Francisco, United States, 18/1/29. https://doi.org/10.1117/12.2288060

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abstract = "Due to the relatively weak birefringence of natural materials in terahertz regime, metasurfaces have been proposed for compact terahertz phase modulators since they show effectively strong birefringence only with ultrathin structures. However, previous designs of metasurface show limited phase modulation reaching only up to the quarter-wavelength phase, and there has been no single metasurface design that works for a terahertz half-waveplate. Here, we present a metasurface that modulates the phase variably up to 180 degrees. The phase modulation is achieved by a hyperbolic metasurface composed of periodically arrayed rectangular metal rings with different periods for horizontal and vertical axis. By controlling each period, we show that our hyperbolic metasurface can possess large positive and negative permittivity values for horizontal and vertical axis and the phase shift can reach up to the 180 degrees. To check the validity of our design, we fabricate reconfigurable metasurface films and demonstrate the phase modulation 90 to 180 degrees. All results show good agreement with numerical simulation results.",

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AB - Due to the relatively weak birefringence of natural materials in terahertz regime, metasurfaces have been proposed for compact terahertz phase modulators since they show effectively strong birefringence only with ultrathin structures. However, previous designs of metasurface show limited phase modulation reaching only up to the quarter-wavelength phase, and there has been no single metasurface design that works for a terahertz half-waveplate. Here, we present a metasurface that modulates the phase variably up to 180 degrees. The phase modulation is achieved by a hyperbolic metasurface composed of periodically arrayed rectangular metal rings with different periods for horizontal and vertical axis. By controlling each period, we show that our hyperbolic metasurface can possess large positive and negative permittivity values for horizontal and vertical axis and the phase shift can reach up to the 180 degrees. To check the validity of our design, we fabricate reconfigurable metasurface films and demonstrate the phase modulation 90 to 180 degrees. All results show good agreement with numerical simulation results.

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Giant phase retardation of terahertz waves by resonant hyperbolic metasurface

Abstract

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Bibliographical note

Keywords

ASJC Scopus subject areas

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