Direct imaging of optimal photonic nanojets from core-shell microcylinders

機構典藏 > College of Engineering > Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering > Journal Article > Item 987654321/104510

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/104510

Title:	Direct imaging of optimal photonic nanojets from core-shell microcylinders
Other Titles:	在核穀微米圓柱中最佳光子奈米噴流的直接成像研究
Authors:	Liu, Cheng-Yang;Hsiao, Kai-Lung;劉承揚
Keywords:	Subwavelength structures;Superresolution;Laser beam shaping;Multilayer design
Date:	2015-09-15
Issue Date:	2016-01-06 11:00:36 (UTC+8)
Publisher:	OPTICAL SOC AMER
Abstract:	We first experimentally evaluate the direct imaging of photonic nanojets from core-shell microcylinders. The optimal photonic nanojet with long length, high intensity spot and low divergence is observed at the designed gold-silver coating microcylinder. A special microcylinder consists of a multilayered metallic shells (gold, silver and copper) and dielectric core (polydimethylsiloxane) at a diameter of 5 μm and a height of 6 μm. The electromagnetic distributions inside and outside the core-shell microcylinders are calculated by using finite-difference time-domain method. The direct imaging measurements for photonic nanojets are performed with a scanning optical microscope system. Such core-shell microcylinders provide new pathways for high resolution optical imaging which are useful for biophotonics, plasmonics and optical data storage.
Relation:	Optics Letters 40(22), pp.5303-5306
DOI:	10.1364/OL.40.005303
Appears in Collections:	[Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering] Journal Article

Files in This Item:

File	Description	Size	Format
Direct imaging of optimal photonic nanojets from core-shell microcylinders.pdf		1652Kb	Adobe PDF	1	View/Open
index.html		0Kb	HTML	180	View/Open