期刊
OPTICS EXPRESS
卷 20, 期 17, 页码 18555-18567出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.018555
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资金
- Natural Science Foundation of China [61008029, 11104040, 51102049]
- Program for New Century Excellent Talents in University [NCET-10-0345]
- Shanghai Pujiang Program [11PJ1400900]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20110071120009]
- China Postdoctoral Science Foundation [2011M500731]
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. (C) 2012 Optical Society of America
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