Tubular oxide microcavity with high-index-contrast walls: Mie scattering theory and 3D confinement of resonant modes | Zendy

Jiao Wang | Zendy; Tianrong Zhan | Zendy; Gaoshan Huang | Zendy; Xugao Cui | Zendy; Xinhua Hu | Zendy; Yongfeng Mei | Zendy

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Tubular oxide microcavity with high-index-contrast walls: Mie scattering theory and 3D confinement of resonant modes

Author(s) -

Jiao Wang,

Tianrong Zhan,

Gaoshan Huang,

Xugao Cui,

Xinhua Hu,

Yongfeng Mei

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.018555

Subject(s) - whispering gallery wave , materials science , mie scattering , refractive index , optics , lasing threshold , scattering , refractive index contrast , light scattering , high refractive index polymer , optoelectronics , characterization (materials science) , fabrication , nanotechnology , physics , resonator , wavelength , medicine , alternative medicine , pathology

Tubular oxide optical microcavities with thin walls (< 100 nm) have been fabricated by releasing pre-stressed Y2O3/ZrO2 bi-layered nanomembranes. Optical characterization demonstrates strong whispering gallery modes with a high quality-factor and fine structures in the visible range, which are due to their high-index-contrast property (high refractive index in thin walls). Moreover, the strong axial light confinement observed in rolled-up circular nanomembranes well agrees with our theoretical calculation by using Mie scattering theory. Novel material design and superior optical resonant properties in such self-rolled micro-tubular cavities promise many potential applications e.g. in optofluidic sensing and lasing.

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