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

页码：21730 / 21740

页数：11

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