| 题名: | Real-space observation of nanojet-induced modes in a chain of microspheres |
| 作者: | Liu, Cheng-Yang;Wang, Po-Kai |
| 贡献者: | 淡江大學機械與機電工程學系 |
| 关键词: | Nanojet-induced mode;Microsphere;Waveguide |
| 日期: | 2014-04-18 |
| 上传时间: | 2014-05-14 09:07:45 (UTC+8) |
| 出版者: | Amsterdam: Elsevier BV * North-Holland |
| 摘要: | The three-dimensional real-space observation of photonic nanojet-induced modes in a chain of microspheres with different diameters is reported. The optical transmission properties of a chain of microspheres are studied by using high resolution finite-difference time-domain calculation. The photonic nanojet-induced modes in different chains of microspheres are measured by using a scanning optical microscope system with an optical-fiber probe. We observe the photonic nanojet-induced modes from optical microscope images for chains of 3 μm, 5 μm, and 8 μm microspheres deposited on a patterned silicon substrate. The incident beam can be periodically reproduced in chains of dielectric microspheres giving rise to lossless periodically optical focusing with period of two diameters. Detailed theoretical and experimental data on the transmission, scattering loss, and field-of-view are presented. This waveguide technique can be used in biomedical microscopy, ultra-precise laser process, microfluidics, and nanophotonic circuits. |
| 關聯: | Physics Letters A 378(22-23), pp.1636-1641 |
| DOI: | 10.1016/j.physleta.2014.04.014 |
| 显示于类别: | [機械與機電工程學系暨研究所] 期刊論文
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