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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 22 — Oct. 24, 2011
  • pp: 21211–21215

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, and Dai-Sik Kim  »View Author Affiliations

Optics Express, Vol. 19, Issue 22, pp. 21211-21215 (2011)

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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.

© 2011 OSA

OCIS Codes
(160.3918) Materials : Metamaterials
(300.6495) Spectroscopy : Spectroscopy, teraherz
(310.6845) Thin films : Thin film devices and applications

ToC Category:

Original Manuscript: July 28, 2011
Revised Manuscript: September 8, 2011
Manuscript Accepted: September 13, 2011
Published: October 10, 2011

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, and Dai-Sik Kim, "Electrical control of terahertz nano antennas on VO2 thin film," Opt. Express 19, 21211-21215 (2011)

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