Abstract
We have fabricated line gratings from periodically etched fused silica on which a thin silver film is deposited that is in turn covered with a silica index-matched fluid. This dielectrically symmetric geometry supports an independent long-range surface plasmon-polariton (LRSPP) and a short-range surface plasmon polariton, and the associated plasmonic band structure has been probed. Coupling to external light is achieved via the patterned grating, and an ultrasharp LRSPP linewidth of 4 nm is observed. The experimental results are compared with finite-difference time-domain simulations.
Original language | English (US) |
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Pages (from-to) | 550-552 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 35 |
Issue number | 4 |
DOIs | |
State | Published - Feb 15 2010 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics