Selected Publications

Surface plasmons in graphene offer a compelling route to many useful photonic technologies. As a plasmonic material, graphene offers several intriguing properties, such as excellent electro-optic tunability, crystalline stability, large optical nonlinearities and extremely high electromagnetic field concentration. As such, recent demonstrations of surface plasmon excitation in graphene using near-field scattering of infrared light have received intense interest. Here we present an all-optical plasmon coupling scheme which takes advantage of the intrinsic nonlinear optical response of graphene. Free-space, visible light pulses are used to generate surface plasmons in a planar graphene sheet using difference frequency wave mixing to match both the wavevector and energy of the surface wave. By carefully controlling the phase matching conditions, we show that one can excite surface plasmons with a defined wavevector and direction across a large frequency range, with an estimated photon efficiency in our experiments approaching $10^{−5}$.
in Nature Physics, 2016

Recent Publications

More Publications

. Cavity enhanced third harmonic generation in graphene. in Applied Physics Letters, 2018.

PDF Project Source Document

. Intensity dependences of the nonlinear optical excitation of plasmons in graphene. in Philosophical Transactions of the Royal Society A, 2017.

Project Source Document

Talks & Poster Presentations

More Talks

Nonlinear Optics for Beginners
Jul 27, 2017 7:30 PM
Bright Ideas: The Science of Light
Sep 10, 2016 7:30 PM
SPIE May Madness: The Magnetic Man
May 27, 2016 4:30 PM

Projects

Electromagnetic Software

Software for Electromagnetic Development

GRASP

Nonlinear Graphene Plasmonics

Natural Plasmonics

Applying Natural Photonics to Plamsonics

Outreach

Public Outereach Work

QUEST

Microwave Metamaterials Using Transformation Optics

Zigzag Gratings

EPSRC PhD Studentship

Teaching

I was a teaching assistant for the following courses at University of Exeter:

  • PHY1025 Mathematics Skills
  • PHY1026 Mathematics for Physicists
  • PHY1027 Practical Physics I
  • PHY1030 Practical Physics and IT Skills