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Lee, Jongwon
Nanostructured Photonic Devices Lab (NPDL)
Research Interests
  • Plasmonics, metasurfaces, metamaterials, surface-enhanced infrared absorption spectroscopy, orbital angular momentum generation

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Ultrafast Electrically Tunable Polaritonic Metasurfaces

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dc.contributor.author Lee, Jongwon ko
dc.contributor.author Jung, Seungyong ko
dc.contributor.author Chen, Pai‐Yen ko
dc.contributor.author Lu, Feng ko
dc.contributor.author Demmerle, Frederic ko
dc.contributor.author Boehm, Gerhard ko
dc.contributor.author Amann, Markus‐Christian ko
dc.contributor.author Alù, Andrea ko
dc.contributor.author Belkin, Mikhail A. ko
dc.date.available 2015-10-05T00:31:30Z -
dc.date.created 2015-09-16 ko
dc.date.issued 2014-11 -
dc.identifier.citation ADVANCED OPTICAL MATERIALS, v.2, no.11, pp.1057 - 1063 ko
dc.identifier.issn 2195-1071 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/17304 -
dc.identifier.uri http://onlinelibrary.wiley.com/doi/10.1002/adom.201400185/abstract;jsessionid=97A3C34F8A8A4CD08D6C58B1DA9741E2.f02t01 ko
dc.description.abstract Electrically tunable mid-infrared metasurfaces with nanosecond response time and broad tuning range are reported. Electrical tuning is achieved by employing strong polaritonic coupling of electromagnetic modes in metallic nanoresonators with voltage-tunable inter-subband transitions in semiconductor heterostructures, tailored for a giant quantum-confined Stark effect. Experimentally, a 220-nm-thick multi-quantum-well semiconductor layer is sandwiched between a ground plane and a metal layer patterned with plasmonic nanoresonators. Approximately 300 nm absorption peak tuning and over 30% absorption change are demonstrated at around 7 m wavelength at normal incidence by changing the DC bias voltage from 0 to +5 V. Fast reflectivity modulation of the metasurface is shown with a response time less than approximate to 10 ns using bias voltage modulation between +2 V and +4 V. Since the bias affects the optical response at the individual nanoresonator level, this approach may be used to create metasurfaces for ultrafast electrical wavefront tuning and beam steering. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher Wiley-VCH ko
dc.subject INTERSUBBAND TRANSITIONS ko
dc.subject QUANTUM-WELLS ko
dc.subject METAMATERIAL DEVICES ko
dc.subject PHASE MODULATORS ko
dc.subject STARK SHIFTS ko
dc.subject GRAPHENE ko
dc.subject ANTENNAS ko
dc.subject metasurfaces ko
dc.subject metamaterials ko
dc.subject plasmonics ko
dc.subject intersubband polaritons ko
dc.subject modulators ko
dc.title Ultrafast Electrically Tunable Polaritonic Metasurfaces ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84910006989 ko
dc.identifier.wosid 000345342100007 ko
dc.type.rims ART ko
dc.description.wostc 6 *
dc.description.scopustc 5 *
dc.date.tcdate 2015-12-28 *
dc.date.scptcdate 2015-11-04 *
dc.identifier.doi 10.1002/adom.201400185 ko
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