Polarization characteristics of gold-coated microdisk resonators | Zendy

Yiheng Yin | Zendy; Yanxiong Niu | Zendy; Lingling Dai | Zendy; Ming Ding | Zendy

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Polarization characteristics of gold-coated microdisk resonators

Author(s) -

Yiheng Yin,

Yanxiong Niu,

Lingling Dai,

Ming Ding

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4986982

Subject(s) - polarization (electrochemistry) , resonator , electric field , materials science , surface plasmon resonance , dielectric , wavelength , coating , optics , plasmon , resonance (particle physics) , optoelectronics , surface plasmon polariton , surface plasmon , nanotechnology , chemistry , nanoparticle , atomic physics , physics , quantum mechanics

The transmission properties and electric-field distribution characteristics of crescent-shaped and fully gold-coated silica microdisk resonators are studied under different polarizations. The transmissivity of the crescent-shaped gold-coated microresonator under TE polarization shows a shift in resonance wavelength relative to that of the resonator without a gold coating, whereas the weakening and elimination of resonance are observed under TM polarization. For the microresonators with a full gold coating, the transmissivity under TE polarization demonstrates a nearly horizontal line and the spectrum under TM polarization displays a stronger resonance. Additionally, the electric-field distributions display properties of both types of structure: the resonance for the TE polarization shows the electric-field confinement, while the hybrid dielectric-surface plasmon polaritons modes are observed for TM polarization. Furthermore, the slow propagation effect observed in the crescent-shaped gold-coated microresonator is discussed and the dependence of transmission on gold thickness is investigated

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