Ultra-broadband terahertz modulation by active hybrid metamaterials

Jane E. Heyes; Withawat Withayachumnankul; Abul K. Azad; Dibakar Roy Chowdhury; Nathaniel K. Grady; Hou Tong Chen

doi:10.1109/IRMMW-THz.2014.6956158

Ultra-broadband terahertz modulation by active hybrid metamaterials

Jane E. Heyes
, Withawat Withayachumnankul
, Abul K. Azad
, Dibakar Roy Chowdhury
, Nathaniel K. Grady
, Hou Tong Chen

Los Alamos National Laboratory

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

Abstract

We demonstrate an ultra-broadband all-optical terahertz modulator based on a semiconductor-integrated hybrid metamaterial. Under photoexcitation using near-infrared laser pulses, the semiconductor regions become highly conducting, causing a transition of the metamaterial from an array of dipole patch grid to a metal wire grating. This transition exhibits dramatically different transmission properties and enables a broadband modulation of terahertz waves. The concept may be further extended to electrically switchable terahertz metamaterials.

Original language	English
Title of host publication	International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
DOIs	https://doi.org/10.1109/IRMMW-THz.2014.6956158
State	Published - Nov 13 2014

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10.1109/IRMMW-THz.2014.6956158

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title = "Ultra-broadband terahertz modulation by active hybrid metamaterials",

abstract = "We demonstrate an ultra-broadband all-optical terahertz modulator based on a semiconductor-integrated hybrid metamaterial. Under photoexcitation using near-infrared laser pulses, the semiconductor regions become highly conducting, causing a transition of the metamaterial from an array of dipole patch grid to a metal wire grating. This transition exhibits dramatically different transmission properties and enables a broadband modulation of terahertz waves. The concept may be further extended to electrically switchable terahertz metamaterials.",

author = "Heyes, \{Jane E.\} and Withawat Withayachumnankul and Azad, \{Abul K.\} and Chowdhury, \{Dibakar Roy\} and Grady, \{Nathaniel K.\} and Chen, \{Hou Tong\}",

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AU - Heyes, Jane E.

AU - Withayachumnankul, Withawat

AU - Azad, Abul K.

AU - Chowdhury, Dibakar Roy

AU - Grady, Nathaniel K.

AU - Chen, Hou Tong

PY - 2014/11/13

Y1 - 2014/11/13

N2 - We demonstrate an ultra-broadband all-optical terahertz modulator based on a semiconductor-integrated hybrid metamaterial. Under photoexcitation using near-infrared laser pulses, the semiconductor regions become highly conducting, causing a transition of the metamaterial from an array of dipole patch grid to a metal wire grating. This transition exhibits dramatically different transmission properties and enables a broadband modulation of terahertz waves. The concept may be further extended to electrically switchable terahertz metamaterials.

AB - We demonstrate an ultra-broadband all-optical terahertz modulator based on a semiconductor-integrated hybrid metamaterial. Under photoexcitation using near-infrared laser pulses, the semiconductor regions become highly conducting, causing a transition of the metamaterial from an array of dipole patch grid to a metal wire grating. This transition exhibits dramatically different transmission properties and enables a broadband modulation of terahertz waves. The concept may be further extended to electrically switchable terahertz metamaterials.

UR - https://www.scopus.com/pages/publications/84911962415

U2 - 10.1109/IRMMW-THz.2014.6956158

DO - 10.1109/IRMMW-THz.2014.6956158

M3 - Conference contribution

SN - 9781479938773

BT - International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz

ER -

Ultra-broadband terahertz modulation by active hybrid metamaterials

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