Electrical control of terahertz nano antennas on VO2 thin film

Young Gyun Jeong; Hannes Bernien; Ji Soo Kyoung; Hyeong Ryeol Park; Hyun Sun Kim; Jae Wook Choi; Bong Jun Kim; Hyun Tak Kim; Kwang Jun Ahn; Dai Sik Kim

doi:10.1364/OE.19.021211

Electrical control of terahertz nano antennas on VO₂ thin film

Young Gyun Jeong, Hannes Bernien, Ji Soo Kyoung, Hyeong Ryeol Park, Hyun Sun Kim, Jae Wook Choi, Bong Jun Kim, Hyun Tak Kim, Kwang Jun Ahn, Dai Sik Kim

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

101 Scopus citations

Abstract

We demonstrate an active metamaterial device that allows to electrically control terahertz transmission over more than one order of magnitude. Our device consists of a lithographically defined gold nano antenna array fabricated on a thin film of vanadium dioxide (VO₂), a material that possesses an insulator to metal transition. The nano antennas let terahertz (THz) radiation funnel through when the VO₂ film is in the insulating state. By applying a dc-bias voltage through our device, the VO₂ becomes metallic. This electrically shorts the antennas and therefore switches off the transmission in two distinct regimes: reversible and irreversible switching.

Original language	English (US)
Pages (from-to)	21211-21215
Number of pages	5
Journal	Optics Express
Volume	19
Issue number	22
DOIs	https://doi.org/10.1364/OE.19.021211
State	Published - Oct 24 2011
Externally published	Yes

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abstract = "We demonstrate an active metamaterial device that allows to electrically control terahertz transmission over more than one order of magnitude. Our device consists of a lithographically defined gold nano antenna array fabricated on a thin film of vanadium dioxide (VO2), a material that possesses an insulator to metal transition. The nano antennas let terahertz (THz) radiation funnel through when the VO2 film is in the insulating state. By applying a dc-bias voltage through our device, the VO2 becomes metallic. This electrically shorts the antennas and therefore switches off the transmission in two distinct regimes: reversible and irreversible switching.",

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AU - Jeong, Young Gyun

AU - Bernien, Hannes

AU - Kyoung, Ji Soo

AU - Park, Hyeong Ryeol

AU - Kim, Hyun Sun

AU - Choi, Jae Wook

AU - Kim, Bong Jun

AU - Kim, Hyun Tak

AU - Ahn, Kwang Jun

AU - Kim, Dai Sik

PY - 2011/10/24

Y1 - 2011/10/24

N2 - We demonstrate an active metamaterial device that allows to electrically control terahertz transmission over more than one order of magnitude. Our device consists of a lithographically defined gold nano antenna array fabricated on a thin film of vanadium dioxide (VO2), a material that possesses an insulator to metal transition. The nano antennas let terahertz (THz) radiation funnel through when the VO2 film is in the insulating state. By applying a dc-bias voltage through our device, the VO2 becomes metallic. This electrically shorts the antennas and therefore switches off the transmission in two distinct regimes: reversible and irreversible switching.

AB - We demonstrate an active metamaterial device that allows to electrically control terahertz transmission over more than one order of magnitude. Our device consists of a lithographically defined gold nano antenna array fabricated on a thin film of vanadium dioxide (VO2), a material that possesses an insulator to metal transition. The nano antennas let terahertz (THz) radiation funnel through when the VO2 film is in the insulating state. By applying a dc-bias voltage through our device, the VO2 becomes metallic. This electrically shorts the antennas and therefore switches off the transmission in two distinct regimes: reversible and irreversible switching.

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Electrical control of terahertz nano antennas on VO₂ thin film

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