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- Kim, Dai-Sik
- Nano Optics Group
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Femtosecond light transmission and subradiant damping in plasmonic crystals
- Author(s)
- Ropers, C, Park, DJ, Stibenz, G, Steinmeyer, G, Kim, J, Kim, DS, Lienau, C
- Issued Date
- 2005-03
- Citation
- PHYSICAL REVIEW LETTERS, v.94, no.11, pp.113901
- Abstract
- We report the first observation of subradiance in plasmonic nanocrystals. Amplitude- and phase-resolved ultrafast transmission experiments directly reveal the coherent coupling between surface plasmon polaritons (SPPs) induced by periodic variations in the dielectric function. This interaction results in the formation of plasmonic band gaps and coupled SPP eigenmodes with different symmetries, as directly shown by near-field imaging. In antisymmetric modes, radiative SPP damping is strongly suppressed, increasing the SPP lifetime from 30 fs to more than 200 fs. The findings are analyzed within a coupled resonance model.
- Publisher
- AMER PHYSICAL SOC
- ISSN
- 0031-9007
- Keyword
- OPTICAL-TRANSMISSION, WAVE-GUIDES, SUPERRADIANT, EMISSION, PULSES, SHIFTS
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