Carbon nanotube biconvex microcavities

Research output: Contribution to journalArticle

Authors

Colleges, School and Institutes

External organisations

  • Harvard Medical School, Wellman Center for Photomedicine, Massachusetts General Hospital
  • National Center for Nanoscience and Technology Beijing

Abstract

Developing highly efficient microcavities with predictive narrow-band resonance frequencies using the least amount of material will allow the applications in nonlinear photonic devices. We have developed a microcavity array that comprised multi-walled carbon nanotubes (MWCNT) organized in a biconvex pattern. The finite element model allowed designing microcavity arrays with predictive transmission properties and assessing the effects of the microarray geometry. The microcavity array demonstrated negative index and produced high Q factors. 2-3 μm tall MWCNTs were patterned as biconvex microcavities, which were separated by 10 μm in an array. The microcavity was iridescent and had optical control over the diffracted elliptical patterns with a far-field pattern, whose properties were predicted by the model. It is anticipated that the MWCNT biconvex microcavities will have implications for the development of highly efficient lenses, metamaterial antennas, and photonic circuits.

Details

Original languageEnglish
Article number121108
JournalApplied Physics Letters
Volume106
Issue number12
Publication statusPublished - 23 Mar 2015

ASJC Scopus subject areas