| 題名: | Superenhanced photonic nanojet by core-shell microcylinders |
| 作者: | Liu, Cheng-Yang |
| 貢獻者: | 淡江大學機械與機電工程學系 |
| 關鍵詞: | Photonic nanojet;Microcylinder;Power enhancement |
| 日期: | 2012-05 |
| 上傳時間: | 2012-05-10 14:57:30 (UTC+8) |
| 出版者: | Amsterdam: Elsevier BV * North-Holland |
| 摘要: | The super-enhancement of photonic nanojets generated at the shadow side surfaces of core-shell microcylinders illuminated by a plane wave is reported. Using high resolution finite-difference time-domain simulation, the enhancements of photonic nanojet at resonance and off-resonance conditions of microcylinders are investigated. The intensity enhancement of photonic nanojet depends strongly on the thickness of metal shell. Under proper resonance condition, the photonic nanojet super-enhancement can be excited in the core-shell microcylinder. Even under off-resonance condition, the photonic nanojet from microcylinder is still strong enough. The results may provide a new technique to detect and image nanoscale objects below the diffraction limit. This could yield a new ultra-microscopy technique for using visible light to detecting nanoparticles, optical gratings, and single molecules. |
| 關聯: | Physics Letters A 376(23), pp.1856–1860 |
| DOI: | 10.1016/j.physleta.2012.04.035 |
| 顯示於類別: | [機械與機電工程學系暨研究所] 期刊論文
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