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Enhanced Multiphoton Upconversion in Single Nanowires by Waveguiding Excitation
Author(s) -
Zhou Jiajia,
Gu Fuxing,
Liu Xiaofeng,
Qiu Jianrong
Publication year - 2016
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201600086
Subject(s) - photon upconversion , excitation , materials science , excited state , optoelectronics , luminescence , power (physics) , photon , nanotechnology , optics , physics , atomic physics , quantum mechanics
40‐Fold enhancement of upconversion luminescence in a single NaGdF 4 –LiF hybrid nanowire is reported, along with a series of unique characteristics. These include four‐photon upconversion from Er 3+ : 2 P 3/2 excited state, a low excitation power threshold, and high optical‐imaging resolution by waveguiding excitation compared to free‐space spot excitation.