Strong enhancement of light-matter interaction in graphene coupled to a photonic crystal nanocavity

Xuetao Gan, Kin Fai Mak, Yuanda Gao, Yumeng You, Fariba Hatami, James Hone, Tony F. Heinz, Dirk Englund

Research output: Contribution to journalArticle

178 Citations (Scopus)

Abstract

We demonstrate a large enhancement in the interaction of light with graphene through coupling with localized modes in a photonic crystal nanocavity. Spectroscopic studies show that a single atomic layer of graphene reduces the cavity reflection by more than a factor of one hundred, while also sharply reducing the cavity quality factor. The strong interaction allows for cavity-enhanced Raman spectroscopy on subwavelength regions of a graphene sample. A coupled-mode theory model matches experimental observations and indicates significantly increased light absorption in the graphene layer. The coupled graphene-cavity system also enables precise measurements of graphene's complex refractive index.

Original languageEnglish (US)
Pages (from-to)5626-5631
Number of pages6
JournalNano Letters
Volume12
Issue number11
DOIs
StatePublished - Nov 14 2012

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Graphite
Photonic crystals
Graphene
graphene
photonics
augmentation
crystals
cavities
interactions
electromagnetic absorption
Light absorption
coupled modes
Raman spectroscopy
Q factors
Refractive index
refractivity

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Gan, X., Mak, K. F., Gao, Y., You, Y., Hatami, F., Hone, J., ... Englund, D. (2012). Strong enhancement of light-matter interaction in graphene coupled to a photonic crystal nanocavity. Nano Letters, 12(11), 5626-5631. https://doi.org/10.1021/nl302746n
Gan, Xuetao ; Mak, Kin Fai ; Gao, Yuanda ; You, Yumeng ; Hatami, Fariba ; Hone, James ; Heinz, Tony F. ; Englund, Dirk. / Strong enhancement of light-matter interaction in graphene coupled to a photonic crystal nanocavity. In: Nano Letters. 2012 ; Vol. 12, No. 11. pp. 5626-5631.
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Gan, X, Mak, KF, Gao, Y, You, Y, Hatami, F, Hone, J, Heinz, TF & Englund, D 2012, 'Strong enhancement of light-matter interaction in graphene coupled to a photonic crystal nanocavity', Nano Letters, vol. 12, no. 11, pp. 5626-5631. https://doi.org/10.1021/nl302746n

Strong enhancement of light-matter interaction in graphene coupled to a photonic crystal nanocavity. / Gan, Xuetao; Mak, Kin Fai; Gao, Yuanda; You, Yumeng; Hatami, Fariba; Hone, James; Heinz, Tony F.; Englund, Dirk.

In: Nano Letters, Vol. 12, No. 11, 14.11.2012, p. 5626-5631.

Research output: Contribution to journalArticle

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AU - Hone, James

AU - Heinz, Tony F.

AU - Englund, Dirk

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