Optical control of fluorescence through plasmonic eigenmode extinction.
We introduce the concept of optical control of the fluorescence yield of CdSe quantum dots through plasmon-induced structural changes in random semicontinuous nanostructured gold films. We demonstrate that the wavelength- and polarization dependent coupling between quantum dots and the semicontinuous films, and thus the fluorescent emission spectrum, can be controlled and significantly increased through the optical extinction of a selective band of eigenmodes in the films. This optical method of effecting controlled changes in the metal nanostructure allows for versatile functionality in a single sample and opens a pathway to in situ control over the fluorescence spectrum.
Materials Sciences and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
Xiaoying
X
Xu
Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan.
Shih-Che
SC
Lin
Department of Mechanical, Aerospace and Biomedical Engineering, the University of Tennessee, Knoxville TN 37996.
Quanshui
Q
Li
Department of Mechanical, Aerospace and Biomedical Engineering, the University of Tennessee, Knoxville TN 37996.
Zhili
Z
Zhang
Center for Nanoscale Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
Ilia N
IN
Ivanov
Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
Yuan
Y
Li
1] Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, United States [2] Materials Sciences and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
Wenbin
W
Wang
Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
Baohua
B
Gu
International Center for Quantum Design of Functional Materials (ICQD), Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China.
Zhenyu
Z
Zhang
Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan.
Chun-Hway
CH
Hsueh
1] Materials Sciences and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States [2] Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, United States.
Paul C
PC
Snijders
1] Materials Sciences and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States [2] Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, United States.
Katyayani
K
Seal