Realization of enhanced light directional beaming via a Bull's eye structure composited with circular disk and conical tip

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 强场激光物理国家重点实验室

	Realization of enhanced light directional beaming via a Bull's eye structure composited with circular disk and conical tip
	Zhang, Qing ; Hu, Pidong ; Liu, Chengpu
刊名	opt. commun.
	2015
卷号	339 页码:216
通讯作者	liu, cp (reprint author), shanghai inst opt & fine mech, state key lab high field laser phys, shanghai 201800, peoples r china.
英文摘要	one new plasmonic light beaming structure aiming to improve beaming property, based on the basic bull's eye pattern but with the central hole blocked by a metal circular disk at the input side and a conical tip added at the output side, is proposed. the fdtd simulation confirms that this composite structure provides an enhanced beaming efficiency of light not only in the signal intensity but also the angular distribution. compared to that for bull's eye structure, the far-field intensity can be enhanced by several times, due to the strong coupling between the circular disk and metal film forming a cavity-like antenna; simultaneously the far-field angular distribution is narrowed obviously, as a result of the focusing effect from the conical tip which significantly localizing the surface plasmon waves excited by the periodic ring grooves. moreover, the near-field light transmission shows an oscillatory pattern versus circular disk's diameter, however as a whole, the competitive contributions from the collecting area and the metal loss of the circular disk, results in the existence of the optimal transmission. (c) 2014 elsevier b.v. all rights reserved.
收录类别	SCI
语种	英语
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.siom.ac.cn/handle/181231/14103]
专题	上海光学精密机械研究所_强场激光物理国家重点实验室
作者单位	1.[Zhang, Qing 2.Liu, Chengpu] Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China 3.[Zhang, Qing] Shanghai Univ, Coll Sci, Dept Phys, Shanghai 200444, Peoples R China 4.[Hu, Pidong] E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qing,Hu, Pidong,Liu, Chengpu. Realization of enhanced light directional beaming via a Bull's eye structure composited with circular disk and conical tip[J]. opt. commun.,2015,339:216.
APA	Zhang, Qing,Hu, Pidong,&Liu, Chengpu.(2015).Realization of enhanced light directional beaming via a Bull's eye structure composited with circular disk and conical tip.opt. commun.,339,216.
MLA	Zhang, Qing,et al."Realization of enhanced light directional beaming via a Bull's eye structure composited with circular disk and conical tip".opt. commun. 339(2015):216.