Ultrafast refractive index control of gate-controlled graphene-metamaterial hybrid devices

Jeongmook Choi, Seung Hoon Lee, Hyeon Don Kim, Bumki Min, Hyunyong Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present an ultrafast dynamics of THz graphene-metamaterial hybrid devices, where the refractive index and the conductivity are largely modulated by electrical and optical methods. Unprecedentedly large modulation of refractive index and the pump-induced negative conductivity are investigated by an ultrafast time-resolved optical-pump THz-probe spectroscopy with varying gate voltage.

Original languageEnglish
Title of host publicationCLEO
Subtitle of host publicationQELS_Fundamental Science, CLEO:QELS FS 2013
PagesQTu1D.5
Publication statusPublished - 2013 Nov 21
EventCLEO: QELS_Fundamental Science, CLEO:QELS FS 2013 - San Jose, CA, United States
Duration: 2013 Jun 92013 Jun 14

Publication series

NameCLEO: QELS_Fundamental Science, CLEO:QELS FS 2013

Other

OtherCLEO: QELS_Fundamental Science, CLEO:QELS FS 2013
CountryUnited States
CitySan Jose, CA
Period13/6/913/6/14

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Choi, J., Lee, S. H., Kim, H. D., Min, B., & Choi, H. (2013). Ultrafast refractive index control of gate-controlled graphene-metamaterial hybrid devices. In CLEO: QELS_Fundamental Science, CLEO:QELS FS 2013 (pp. QTu1D.5). (CLEO: QELS_Fundamental Science, CLEO:QELS FS 2013).