Published March 17, 2014
| Version v1
Journal article
Spaser based on Fano resonance in a rod and concentric square ring-disk nanostructure
- 1. State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062 (China)
- 2. Department of Physics, Tianjin Polytechnic University, Tianjin 300387 (China)
Description
This paper reports a spaser based on Fano resonance of a plasmonic nanostructure consisting of a rod and concentric square ring-disk structure coated with a layer of gain media. The amplification of the dark quadrupolar mode at the Fano resonance wavelength causes the spaser with a high Purcell factor of 3.24 × 107, a high signal to noise ratio of 4.4 × 106, and a lower threshold of 0.02086. These significant optical properties are attributed to the greatly enhanced spontaneous emission and depressed radiation loss supported by the strong localized dark mode at the Fano resonance wavelength
Additional details
Identifiers
- DOI
- 10.1063/1.4868867;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 104
- Journal Issue
- 11
- Journal Page Range
- p. 113104-113104.3
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 45078937
- Subject category
- S77: NANOSCIENCE AND NANOTECHNOLOGY;
- Descriptors DEI
- GAIN; NANOSTRUCTURES; OPTICAL PROPERTIES; RESONANCE; SIGNAL-TO-NOISE RATIO
- Descriptors DEC
- AMPLIFICATION; DIMENSIONLESS NUMBERS; PHYSICAL PROPERTIES
Optional Information
- Notes
- (c) 2014 AIP Publishing LLC