Photonic nanojet modulation by elliptical microcylinders

機構典藏 > College of Engineering > Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering > Journal Article > Item 987654321/98322

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Title:	Photonic nanojet modulation by elliptical microcylinders
Other Titles:	應用橢圓微米圓柱來達到光子奈米噴流調製研究
Authors:	劉承揚;Li-Jen Chang
Contributors:	機械與機電工程學系暨研究所
Keywords:	Photonic nanojet;Microcylinder;Ellipse
Date:	2014-08
Issue Date:	2014-07-17 11:53:44 (UTC+8)
Publisher:	Elsevier GmbH - Urban und Fischer
Abstract:	The detailed analysis of localized photonic nanojets generated at the shadow side surfaces of dielectric elliptical microcylinder illuminated by a plane wave is reported. We have studied the distribution of the electric energy density within and in the vicinity outside an elliptical microcylinder by using finite-difference time-domain calculation with high resolution. The location of photonic nanojet depends on the radius ratio of the microcylinder. We have further analyzed the effect of the rotation angle of elliptical microcylinder upon the focal length of photonic nanojets. The horizontal and vertical shifts of photonic nanojet can be changed by rotating the rotation angle of elliptical microcylinder. The mechanisms of elliptical microcylinder may supply a new ultra-lens approach to distinguish nanoscale targets such as nanoparticles, optical gratings, and nanoscale surface roughness.
Relation:	Optik 125(15), pp.4043-4046
DOI:	10.1016/j.ijleo.2014.01.116
Appears in Collections:	[Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering] Journal Article

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