Two-photon excited fluorescence from a pseudoisocyanine-attached gold tip via a plasmonic-photonic hybrid system

被引：4
|
作者：
Ren, Fang [1 ,2 ]
Takashima, Hideaki [1 ]
Tanaka, Yoshito [1 ]
Fujiwara, Hideki [1 ]
Sasaki, Keiji [1 ]
机构：
[1] Hokkaido Univ, Res Inst Elect Sci, Sapporo, Hokkaido 0010020, Japan
[2] Peking Univ, Sch Elect Engn & Comp Sci, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China
来源：
OPTICS EXPRESS | 2015年 / 23卷 / 17期
关键词：
RESONANCE SENSORS; 2ND-HARMONIC GENERATION; SPECTROSCOPY; ENHANCEMENT; ABSORPTION; EXCITATION; LIGHT; SERS;
D O I：
10.1364/OE.23.021730
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A plasmonic-photonic hybrid system with efficient coupling of light from a fiber-coupled microspherical cavity to localized surface plasmon (LSP) modes of a gold-coated tip was proposed, which was composed of a fiber-coupled microspherical cavity and a pseudoisocyanine (PIC)-attached gold tip. To prove efficient excitation of LSP at the goldcoated tip, we experimentally demonstrated two-photon excited fluorescence from the PIC-attached gold-coated tip via a fiber-coupled microspherical cavity under a weak continuous wave excitation condition. This hybrid system could focus the incident light with coupling efficiency of around 64% into a nanoscale domain of the metal tip with an effective area of a 79-nm circle. (C) 2015 Optical Society of America
引用
收藏
页码：21730 / 21740
页数：11
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