Metamaterials for Enhanced Polarization Conversion in Plasmonic Excitation
Abstract
Surface plasmons efficient excitation is typically expected to be strongly constrained to transverse magnetic (TM) polarized incidence, as demonstrated so far, due to its intrinsic TM polarization. We report a designer plasmonic metamaterial that is engineered in a deep subwavelength scale in visible optical frequencies to overcome this fundamental limitation, and allows transverse electric (TE) polarized incidence to be strongly coupled to surface plasmons. The experimental verification, which is consistent with the analytical and numerical models, demonstrates this enhanced TE-to-plasmon coupling with efficiency close to 100%, which is far from what is possible through naturally available materials. This discovery will help to efficiently utilize the energy fallen into TE polarization and drastically increase overall excitation efficiency of future plasmonic devices.
Additional Information
© 2011 American Chemical Society. Received for review March 29, 2011 and accepted April 18, 2011. Published online April 18, 2011. This work was supported by NSF, DARPA, and NSF CIAN ERC.Additional details
- Eprint ID
- 24372
- DOI
- 10.1021/nn201181p
- Resolver ID
- CaltechAUTHORS:20110712-092952249
- NSF
- Defense Advanced Research Projects Agency (DARPA)
- NSF CIAN ERC
- Created
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2011-07-12Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field