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- Title
A Facile Strategy for All-Optical Controlling Platform by Using Plasmonic Perfect Absorbers.
- Authors
Liu, Zhengqi; Fu, Guolan; Yang, Yan-Xing; Pan, Pingping; Huang, Zhenping; Chen, Jian
- Abstract
Dual-band light absorption with the maximal absorptivity up to 99.7% and the minimal spectral bandwidth down to 3 nm is obtained in the plasmonic absorbers consisting of triple-layer plasmonic crystal-nonlinear medium cavity-metal substrate structure, where the intercalated dielectric material is chosen to be a Kerr medium cavity. Efficient all-optical controlling with high spectral intensity change ratios and detecting signal-to-noise is achieved for the system after a slight increase of pumping intensity. These impressive results mainly result from the strong plasmonic resonant field confinement in the middle nonlinear Kerr medium cavity and the near-perfect relative intensity change response by the ultra-sharp anti-reflection spectrum. This work can lay a foundation for advanced all-optical devices by exploiting light perfect absorption behavior and resonant optical field enhancement.
- Subjects
LIGHT propagation; SURFACE plasmon resonance; DIELECTRIC materials; KERR electro-optical effect; ELECTRIC properties of metals; OPTICAL communications equipment; SIGNAL-to-noise ratio; EQUIPMENT &; supplies
- Publication
Plasmonics, 2018, Vol 13, Issue 3, p797
- ISSN
1557-1955
- Publication type
Article
- DOI
10.1007/s11468-017-0574-5