Journal
NANO LETTERS
Volume 10, Issue 12, Pages 4880-4883Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl102747v
Keywords
Surface plasmons; localized plasmons; plasmonic nanocavity; grating; nonlinear optics
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Funding
- NSF [EEC-0540832]
- Office of Naval Research
- Robert A Welch Foundation [A 1261]
- NSF Nano scale Science and Engineering Center (NSEC)
- center for Nanoscale Systems (CNS) at Harvard University
- Institute for Quantum studies at Texas AM University
- Ecole Normale Superieure de Cachan France
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Enhancing nonlinear processes at the nanoscale is a crucial step toward the development of nanophotonics and new spectroscopy techniques Here we demonstrate a novel plasmonic structure called plasmonic nanocavtiy grating which is shown to dramatically enhance surface nonlinear optical processes It consists of resonant cavities that are periodically arranged to combine local and grating resonances The four wave mixing signal generated in our gold nanocavity grating is enhanced by a factor up to approximate to 2000 2 orders of magnitude higher than that previously reported
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