Highly Efficient Coupling of Photons from Nanoemitters into Single-Mode Optical Fibers
Highly Efficient Coupling of Photons from Nanoemitters into Single-Mode Optical Fibers
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DOI：
10.1021/nl2024867
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发表时间：
2011-10-01
期刊：
影响因子：
10.8
通讯作者：
Takeuchi, Shigeki
中科院分区：
文献类型：
--
作者：
Fujiwara, Masazumi;Toubaru, Kiyota;Takeuchi, Shigeki
使用锥形光纤证明了从纳米发射器到单模光纤的光子的高效耦合。将来自单个CdSe/ZnS纳米晶体的总发射光子的百分比（7.4 +/-1.2%）耦合到300 nm直径的锥形光纤中。研究了耦合效率与锥径的关系，发现耦合效率随锥径的减小呈指数增长。这种方法是非常有前途的纳米粒子传感和单光子源。
Highly efficient coupling of photons from nanoemitters into single-mode optical fibers is demonstrated using tapered fibers. A percentage (7.4 +/- 1.2%) of the total emitted photons from single CdSe/ZnS nanocrystals were coupled into a 300 nm diameter tapered fiber. The dependence of the coupling efficiency on the taper diameter was investigated and the coupling efficiency was found to increase exponentially with decreasing diameter. This method is very promising for nanoparticle sensing and single-photon sources.