Journal
NANOTECHNOLOGY
Volume 27, Issue 22, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/27/22/225203
Keywords
nanocavity; plasmon; photonic crystal
Funding
- UK EPSRC through the Programme Grant 'Hybrid Polaritonics' [EP/M025330/1]
- Kurdistan Regional Government
- Engineering and Physical Sciences Research Council [EP/M025330/1] Funding Source: researchfish
- EPSRC [EP/M025330/1] Funding Source: UKRI
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We fabricate and characterise an optical structure consisting of a photonic crystal L3 nanocavity containing two gold nanodisks placed close to a field antinode. We use finite difference time domain (FDTD) modelling to show that the optical properties of the nanocavity are sensitive to the physical separation between the gold nanodisks, and that at reduced separation, the q-factor of a cavity mode polarised parallel to the dimer long-axis is reduced, indicating coupling between the cavity mode and a localised plasmon. Preliminary experimental measurements indeed indicate a damping of the cavity mode in the presence of the dimer; a result consistent with the FDTD modelling. Such a scheme may be used to integrate plasmonic systems into all-optical photonic circuits.
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