Giant nonlinear response of terahertz nanoresonators on Vo2 thin film

Jisoo Kyoung; Minah Seo; Hyeongryeol Park; Sukmo Koo; Hyun Sun Kim; Youngmi Park; Bong Jun Kim; Kwangjun Ahn; Namkyoo Park; Hyun Tak Kim; Dai Sik Kim

doi:10.1364/OE.18.016452

Giant nonlinear response of terahertz nanoresonators on Vo₂ thin film

Jisoo Kyoung
, Minah Seo
, Hyeongryeol Park
, Sukmo Koo
, Hyun Sun Kim
, Youngmi Park
, Bong Jun Kim
, Kwangjun Ahn
, Namkyoo Park
, Hyun Tak Kim
, Dai Sik Kim

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

49 Scopus citations

Abstract

We report on an order of magnitude enhanced nonlinear response of vanadium dioxide thin film patterned with nanoresonators - nano slot antennas fabricated on the gold film. Transmission of terahertz radiation, little affected by an optical pumping for the case of bulk thin film, can now be completely switched-off: ΔT/T≈-0.9999 by the same optical pumping power. This unprecedentedly large optical pump-terahertz probe nonlinearity originates from the insulator-to-metal phase transition drastically reducing the antenna cross sections of the nanoresonators. Our scheme enables nanoscale-thin film technology to be used for all-optical switching of long wavelength light.

Original language	English (US)
Pages (from-to)	16452-16459
Number of pages	8
Journal	Optics Express
Volume	18
Issue number	16
DOIs	https://doi.org/10.1364/OE.18.016452
State	Published - Aug 2 2010
Externally published	Yes

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10.1364/OE.18.016452

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abstract = "We report on an order of magnitude enhanced nonlinear response of vanadium dioxide thin film patterned with nanoresonators - nano slot antennas fabricated on the gold film. Transmission of terahertz radiation, little affected by an optical pumping for the case of bulk thin film, can now be completely switched-off: ΔT/T≈-0.9999 by the same optical pumping power. This unprecedentedly large optical pump-terahertz probe nonlinearity originates from the insulator-to-metal phase transition drastically reducing the antenna cross sections of the nanoresonators. Our scheme enables nanoscale-thin film technology to be used for all-optical switching of long wavelength light.",

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AU - Kyoung, Jisoo

AU - Seo, Minah

AU - Park, Hyeongryeol

AU - Koo, Sukmo

AU - Kim, Hyun Sun

AU - Park, Youngmi

AU - Kim, Bong Jun

AU - Ahn, Kwangjun

AU - Park, Namkyoo

AU - Kim, Hyun Tak

AU - Kim, Dai Sik

PY - 2010/8/2

Y1 - 2010/8/2

N2 - We report on an order of magnitude enhanced nonlinear response of vanadium dioxide thin film patterned with nanoresonators - nano slot antennas fabricated on the gold film. Transmission of terahertz radiation, little affected by an optical pumping for the case of bulk thin film, can now be completely switched-off: ΔT/T≈-0.9999 by the same optical pumping power. This unprecedentedly large optical pump-terahertz probe nonlinearity originates from the insulator-to-metal phase transition drastically reducing the antenna cross sections of the nanoresonators. Our scheme enables nanoscale-thin film technology to be used for all-optical switching of long wavelength light.

AB - We report on an order of magnitude enhanced nonlinear response of vanadium dioxide thin film patterned with nanoresonators - nano slot antennas fabricated on the gold film. Transmission of terahertz radiation, little affected by an optical pumping for the case of bulk thin film, can now be completely switched-off: ΔT/T≈-0.9999 by the same optical pumping power. This unprecedentedly large optical pump-terahertz probe nonlinearity originates from the insulator-to-metal phase transition drastically reducing the antenna cross sections of the nanoresonators. Our scheme enables nanoscale-thin film technology to be used for all-optical switching of long wavelength light.

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JO - Optics Express

JF - Optics Express

IS - 16

ER -

Giant nonlinear response of terahertz nanoresonators on Vo₂ thin film

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