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 language | English (US) |
|---|---|
| Pages (from-to) | 5626-5631 |
| Number of pages | 6 |
| Journal | Nano Letters |
| Volume | 12 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 14 2012 |
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All Science Journal Classification (ASJC) codes
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering
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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 journal › Article
TY - JOUR
T1 - Strong enhancement of light-matter interaction in graphene coupled to a photonic crystal nanocavity
AU - Gan, Xuetao
AU - Mak, Kin Fai
AU - Gao, Yuanda
AU - You, Yumeng
AU - Hatami, Fariba
AU - Hone, James
AU - Heinz, Tony F.
AU - Englund, Dirk
PY - 2012/11/14
Y1 - 2012/11/14
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84869152915&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84869152915&partnerID=8YFLogxK
U2 - 10.1021/nl302746n
DO - 10.1021/nl302746n
M3 - Article
VL - 12
SP - 5626
EP - 5631
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 11
ER -