Efficient Terahertz Detection with Perfectly-Absorbing Metasurface

Lucy Hale; Tom Siday; Polina P. Vabishchevich; Charles Thomas Harris; Ting Shan Luk; John L. Reno; Igal Brener; Oleg Mitrofanov

doi:10.1109/IRMMW-THz.2019.8874412

Efficient Terahertz Detection with Perfectly-Absorbing Metasurface

Lucy Hale
, Tom Siday
, Polina P. Vabishchevich
, Charles Thomas Harris
, Ting Shan Luk
, John L. Reno
, Igal Brener
, Oleg Mitrofanov

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

1 Scopus citations

Abstract

We demonstrate a unique photoconductive design for terahertz (THz) detection based on a perfectly absorbing, all-dielectric metasurface. Our design exploits Mie resonances in electrically connected cubic resonators fabricated in low-temperature grown (LT) GaAs. Experimentally, the detector achieves very high contrast between ON/OFF conductivity states (107) whilst also requiring extremely low optical power for optimal operation (100 muW). We find that the Mie resonances dissipate sufficiently fast and maintain the detection bandwidth up to 3 THz.

Original language	English
Title of host publication	International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume	2019-September
DOIs	https://doi.org/10.1109/IRMMW-THz.2019.8874412
State	Published - Sep 1 2019
Externally published	Yes

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10.1109/IRMMW-THz.2019.8874412

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title = "Efficient Terahertz Detection with Perfectly-Absorbing Metasurface",

abstract = "We demonstrate a unique photoconductive design for terahertz (THz) detection based on a perfectly absorbing, all-dielectric metasurface. Our design exploits Mie resonances in electrically connected cubic resonators fabricated in low-temperature grown (LT) GaAs. Experimentally, the detector achieves very high contrast between ON/OFF conductivity states (107) whilst also requiring extremely low optical power for optimal operation (100 muW). We find that the Mie resonances dissipate sufficiently fast and maintain the detection bandwidth up to 3 THz.",

author = "Lucy Hale and Tom Siday and Vabishchevich, \{Polina P.\} and Harris, \{Charles Thomas\} and Luk, \{Ting Shan\} and Reno, \{John L.\} and Igal Brener and Oleg Mitrofanov",

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doi = "10.1109/IRMMW-THz.2019.8874412",

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booktitle = "International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz",

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T1 - Efficient Terahertz Detection with Perfectly-Absorbing Metasurface

AU - Hale, Lucy

AU - Siday, Tom

AU - Vabishchevich, Polina P.

AU - Harris, Charles Thomas

AU - Luk, Ting Shan

AU - Reno, John L.

AU - Brener, Igal

AU - Mitrofanov, Oleg

PY - 2019/9/1

Y1 - 2019/9/1

N2 - We demonstrate a unique photoconductive design for terahertz (THz) detection based on a perfectly absorbing, all-dielectric metasurface. Our design exploits Mie resonances in electrically connected cubic resonators fabricated in low-temperature grown (LT) GaAs. Experimentally, the detector achieves very high contrast between ON/OFF conductivity states (107) whilst also requiring extremely low optical power for optimal operation (100 muW). We find that the Mie resonances dissipate sufficiently fast and maintain the detection bandwidth up to 3 THz.

AB - We demonstrate a unique photoconductive design for terahertz (THz) detection based on a perfectly absorbing, all-dielectric metasurface. Our design exploits Mie resonances in electrically connected cubic resonators fabricated in low-temperature grown (LT) GaAs. Experimentally, the detector achieves very high contrast between ON/OFF conductivity states (107) whilst also requiring extremely low optical power for optimal operation (100 muW). We find that the Mie resonances dissipate sufficiently fast and maintain the detection bandwidth up to 3 THz.

UR - https://www.scopus.com/pages/publications/85074688060

U2 - 10.1109/IRMMW-THz.2019.8874412

DO - 10.1109/IRMMW-THz.2019.8874412

M3 - Conference contribution

SN - 9781538682852

VL - 2019-September

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

ER -

Efficient Terahertz Detection with Perfectly-Absorbing Metasurface

Abstract

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