Compact dual-band terahertz quarter-wave plate metasurface

Victor Torres; Nuria Sánchez; David Etayo; Ruben Ortuño; Miguel Navarro-Cia; Alejandro Martínez; Miguel Beruete

doi:10.1109/LPT.2014.2330860

Compact dual-band terahertz quarter-wave plate metasurface

Victor Torres, Nuria Sánchez, David Etayo, Ruben Ortuño, Miguel Navarro-Cia, Alejandro Martínez, Miguel Beruete

Engineering and Physical Sciences

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

153 Downloads (Pure)

Abstract

A dual-band quarter-wave plate based on a modified extraordinary transmission hole array is numerically analyzed and experimentally demonstrated at terahertz frequencies. To control independently orthogonal polarizations, the original square holes are connected with vertical slits and their lateral straight sides are replaced by meander lines. This smart design enables dual-band operation with unprecedented fractional bandwidths in a compact structure. Considering a flattening deviation lower than 40% of the optimum value, a fractional bandwidth of 53.8% and 3.8% is theoretically obtained (16.8% and 2.9% in the experiment) at 1 and 2.2 THz, respectively. At these two frequencies, the structure is 0.13- λ) and 0.29- λ) thick, respectively. Given the compactness of the whole structure and the performance obtained, this quarter-wave plate is presented as a competitive device for the terahertz band.

Original language	English
Article number	6834827
Pages (from-to)	1679-1682
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	26
Issue number	16
DOIs	https://doi.org/10.1109/LPT.2014.2330860
Publication status	Published - 15 Aug 2014

Keywords

birefringence
extraordinary transmission
metasurface
Quarter-wave plate
terahertz applications

ASJC Scopus subject areas

Electrical and Electronic Engineering
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials

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10.1109/LPT.2014.2330860

Torres_et_al_Compact_Dual-Band_Terahertz_Photonics_Technology_Letters_2014
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Cite this

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title = "Compact dual-band terahertz quarter-wave plate metasurface",

abstract = "A dual-band quarter-wave plate based on a modified extraordinary transmission hole array is numerically analyzed and experimentally demonstrated at terahertz frequencies. To control independently orthogonal polarizations, the original square holes are connected with vertical slits and their lateral straight sides are replaced by meander lines. This smart design enables dual-band operation with unprecedented fractional bandwidths in a compact structure. Considering a flattening deviation lower than 40% of the optimum value, a fractional bandwidth of 53.8% and 3.8% is theoretically obtained (16.8% and 2.9% in the experiment) at 1 and 2.2 THz, respectively. At these two frequencies, the structure is 0.13- λ) and 0.29- λ) thick, respectively. Given the compactness of the whole structure and the performance obtained, this quarter-wave plate is presented as a competitive device for the terahertz band.",

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AU - Torres, Victor

AU - Sánchez, Nuria

AU - Etayo, David

AU - Ortuño, Ruben

AU - Navarro-Cia, Miguel

AU - Martínez, Alejandro

AU - Beruete, Miguel

PY - 2014/8/15

Y1 - 2014/8/15

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AB - A dual-band quarter-wave plate based on a modified extraordinary transmission hole array is numerically analyzed and experimentally demonstrated at terahertz frequencies. To control independently orthogonal polarizations, the original square holes are connected with vertical slits and their lateral straight sides are replaced by meander lines. This smart design enables dual-band operation with unprecedented fractional bandwidths in a compact structure. Considering a flattening deviation lower than 40% of the optimum value, a fractional bandwidth of 53.8% and 3.8% is theoretically obtained (16.8% and 2.9% in the experiment) at 1 and 2.2 THz, respectively. At these two frequencies, the structure is 0.13- λ) and 0.29- λ) thick, respectively. Given the compactness of the whole structure and the performance obtained, this quarter-wave plate is presented as a competitive device for the terahertz band.

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ER -

Compact dual-band terahertz quarter-wave plate metasurface

Abstract

Keywords

ASJC Scopus subject areas

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