Full three-dimensional subwavelength high-Q surface-plasmon-polariton cavity.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 19995082.
- Also identified by DOI 10.1021/nl902274m.
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Abstract
We propose a full three-dimensional subwavelength surface-plasmon-polariton cavity based on a metal-coated dielectric nanowire with an axial heterostructure. Surface plasmon-polaritons are strongly confined at the nanowire-metal interface sandwiched by an effective plasmonic mirror that consists of lower-index nanowire core and metal shell. Numerical simulations show for a cavity <50 x 50 x 40 nm(3) (mode volume, V approximately 10(-5) microm(3)) that a quality factor, Q, >36000 is achieved at 20 K. This ultrasmall plasmonic cavity can be used as a plasmonic emitter or laser device coupled to a plasmonic waveguide with a high coupling efficiency in deep-subwavelength photonic systems.
Medical subject headings
- Nanotechnology
- Optical Devices
- Refractometry
- Surface Plasmon Resonance