AI Article Synopsis
- Researchers studied how multiple excitations of localized surface plasmons (LSPs) from an array of gold nanoparticles (Au NPs) impact optical properties in a ridge waveguide.
- They discovered that the optical intensity in the Au NP array ridge waveguide is approximately 700% greater than that of a standard ridge waveguide.
- The arrangement of the nanoparticles is crucial for maximizing LSP excitation, resulting in a remarkably small optical spot size of 10 nm x 10 nm at a distance of 5 nm from the exit plane.
Article Abstract
We present a description of a multiple excitation of localized surface plasmons (LSPs) from an Au nanoparticle (NP) array-based ridge waveguide to create a small optical spot size with an extremely strong intensity. Using a numerical finite-difference time-domain method, we find that the optical intensity of the ridge waveguide with an Au NP array is about 700% higher than that of a simple ridge waveguide. Moreover, the spacing between the NPs plays an important role in the multiple excitation of LSPs. The spot size, calculated at FWHM, is 10 nm x 10 nm at a distance of 5 nm from the exit plane.
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| http://dx.doi.org/10.1364/OE.18.001576 | DOI Listing |
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