Electrical control of terahertz nano antennas on VO_2 thin film | Zendy

YoungGyun Jeong | Zendy; Hannes Bernien | Zendy; Jisoo Kyoung | Zendy; Hyeong-Ryeol Park | Zendy; HyunSun Kim | Zendy; Jae-Wook Choi | Zendy; Bong-Jun Kim | Zendy; HyunTak Kim | Zendy; Kwang Jun Ahn | Zendy; DaiSik Kim | Zendy

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Electrical control of terahertz nano antennas on VO_2 thin film

Author(s) -

YoungGyun Jeong,

Hannes Bernien,

Jisoo Kyoung,

Hyeong-Ryeol Park,

HyunSun Kim,

Jae-Wook Choi,

Bong-Jun Kim,

HyunTak Kim,

Kwang Jun Ahn,

DaiSik Kim

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.021211

Subject(s) - terahertz radiation , materials science , optoelectronics , metamaterial , thin film , optics , transmittance , biasing , nano , voltage , nanotechnology , electrical engineering , physics , engineering , composite material

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 (VO(2)), a material that possesses an insulator to metal transition. The nano antennas let terahertz (THz) radiation funnel through when the VO(2) film is in the insulating state. By applying a dc-bias voltage through our device, the VO(2) 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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