Nanopattern enabled terahertz all-optical switching on vanadium dioxide thin film

S. B. Choi; J. S. Kyoung; H. S. Kim; H. R. Park; D. J. Park; Bong Jun Kim; Y. H. Ahn; F. Rotermund; Hyun Tak Kim; K. J. Ahn; D. S. Kim

doi:10.1063/1.3553504

Nanopattern enabled terahertz all-optical switching on vanadium dioxide thin film

S. B. Choi, J. S. Kyoung, H. S. Kim, H. R. Park, D. J. Park, Bong Jun Kim, Y. H. Ahn, F. Rotermund, Hyun Tak Kim, K. J. Ahn, D. S. Kim

Electrical and Computer Engineering

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

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Abstract

We demonstrate ultrafast all-optical control of terahertz (THz) radiation through nanoresonators, slot antennas with a hundred micron length but submicron width in thin gold layers, fabricated on vanadium dioxide (VO₂) thin films. Our THz nanoresonators show almost perfect transmission at resonance. By virtue of phase transition of VO₂ from insulating to metallic state, induced in subpicosecond time scale by moderate optical pump, ultrafast control of THz transmission is enabled. This is compared to bare VO₂ films where no switching dynamics are observed under similar conditions.

Original language	English (US)
Article number	071105
Journal	Applied Physics Letters
Volume	98
Issue number	7
DOIs	https://doi.org/10.1063/1.3553504
State	Published - Feb 14 2011

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) (SRC, Grant No. R11-2008-095-01000-0), the Korea Research Foundation (KRF), KICOS (GRL, Grant No. K20815000003), and Hi Seoul Science/Humanities Fellowship grant funded by the Korean Government (MEST) (Grant No. 2009-0071309), the Seoul R&BD Program (10543), and Seoul Scholarship Foundation.

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title = "Nanopattern enabled terahertz all-optical switching on vanadium dioxide thin film",

abstract = "We demonstrate ultrafast all-optical control of terahertz (THz) radiation through nanoresonators, slot antennas with a hundred micron length but submicron width in thin gold layers, fabricated on vanadium dioxide (VO2) thin films. Our THz nanoresonators show almost perfect transmission at resonance. By virtue of phase transition of VO2 from insulating to metallic state, induced in subpicosecond time scale by moderate optical pump, ultrafast control of THz transmission is enabled. This is compared to bare VO2 films where no switching dynamics are observed under similar conditions.",

author = "Choi, {S. B.} and Kyoung, {J. S.} and Kim, {H. S.} and Park, {H. R.} and Park, {D. J.} and Kim, {Bong Jun} and Ahn, {Y. H.} and F. Rotermund and Kim, {Hyun Tak} and Ahn, {K. J.} and Kim, {D. S.}",

note = "Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) (SRC, Grant No. R11-2008-095-01000-0), the Korea Research Foundation (KRF), KICOS (GRL, Grant No. K20815000003), and Hi Seoul Science/Humanities Fellowship grant funded by the Korean Government (MEST) (Grant No. 2009-0071309), the Seoul R&BD Program (10543), and Seoul Scholarship Foundation.",

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T1 - Nanopattern enabled terahertz all-optical switching on vanadium dioxide thin film

AU - Choi, S. B.

AU - Kyoung, J. S.

AU - Kim, H. S.

AU - Park, H. R.

AU - Park, D. J.

AU - Kim, Bong Jun

AU - Ahn, Y. H.

AU - Rotermund, F.

AU - Kim, Hyun Tak

AU - Ahn, K. J.

AU - Kim, D. S.

N1 - Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) (SRC, Grant No. R11-2008-095-01000-0), the Korea Research Foundation (KRF), KICOS (GRL, Grant No. K20815000003), and Hi Seoul Science/Humanities Fellowship grant funded by the Korean Government (MEST) (Grant No. 2009-0071309), the Seoul R&BD Program (10543), and Seoul Scholarship Foundation.

PY - 2011/2/14

Y1 - 2011/2/14

N2 - We demonstrate ultrafast all-optical control of terahertz (THz) radiation through nanoresonators, slot antennas with a hundred micron length but submicron width in thin gold layers, fabricated on vanadium dioxide (VO2) thin films. Our THz nanoresonators show almost perfect transmission at resonance. By virtue of phase transition of VO2 from insulating to metallic state, induced in subpicosecond time scale by moderate optical pump, ultrafast control of THz transmission is enabled. This is compared to bare VO2 films where no switching dynamics are observed under similar conditions.

AB - We demonstrate ultrafast all-optical control of terahertz (THz) radiation through nanoresonators, slot antennas with a hundred micron length but submicron width in thin gold layers, fabricated on vanadium dioxide (VO2) thin films. Our THz nanoresonators show almost perfect transmission at resonance. By virtue of phase transition of VO2 from insulating to metallic state, induced in subpicosecond time scale by moderate optical pump, ultrafast control of THz transmission is enabled. This is compared to bare VO2 films where no switching dynamics are observed under similar conditions.

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JF - Applied Physics Letters

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Nanopattern enabled terahertz all-optical switching on vanadium dioxide thin film

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