Silicon nanocrystal luminescence coupled to whispering gallery modes in optical fibers

被引:23
作者
Bianucci, P. [1 ]
Rodr-guez, J. R. [2 ]
Clements, C. M. [1 ]
Veinot, J. G. C. [2 ]
Meldrum, A. [1 ]
机构
[1] Univ Alberta, Dept Phys, Edmonton, AB T6G 2G7, Canada
[2] Univ Alberta, Dept Chem, Edmonton, AB T6G 2G2, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
elemental semiconductors; fluorescence; micro-optics; nanostructured materials; optical fibres; Q-factor; semiconductor thin films; silicon; silicon compounds; whispering gallery modes; REFRACTIVE-INDEX; HYDROGEN SILSESQUIOXANE; THIN-FILMS; MICROSPHERES; SENSORS; LAYER; MICROCAVITY; SENSITIVITY; BIOSENSORS; RESONATOR;
D O I
10.1063/1.3072623
中图分类号
O59 [应用物理学];
学科分类号
摘要
Oxide-embedded silicon nanocrystals (Si-NCs) are a promising material for microphotonics, particularly when coupled to high quality factor (Q-factor) optical cavity modes. By glazing smooth nanocrystalline films from a solution-based precursor onto the surface of optical fibers, the Si-NC luminescence can be strongly coupled into the optical modes of the fiber. Well-developed whispering gallery modes occur in the luminescence of the Si-NCs measured perpendicular to the fiber axis, showing detection-limited Q-factors in the emission spectrum. In addition to providing high Q-factor fluorescence without the need for lithographic procedures, the physical versatility of a nanocrystal-coated fiber suggests possible refractometric applications.
引用
收藏
页数:5
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