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Title: Coherent selection of invisible high-order electromagnetic excitations
Authors: Tseng, Ming Lun
Fang, Xu
Savinov, Vassili
Wu, Pin Chieh
Ou, Jun-Yu
Zheludev, Nikolay I.
Tsai, Din Ping
Keywords: Optics and photonics
Nanophotonics and plasmonics
Issue Date: 2017
Source: Tseng, M. L., Fang, X., Savinov, V., Wu, P. C., Ou, J.-Y., Zheludev, N. I., et al. (2017). Coherent selection of invisible high-order electromagnetic excitations. Scientific Reports, 7, 44488-.
Series/Report no.: Scientific Reports
Abstract: Far-field spectroscopy and mapping of electromagnetic near-field distribution are the two dominant tools for analysis and characterization of the electromagnetic response in nanophotonics. Despite the widespread use, these methods can fail at identifying weak electromagnetic excitations masked by stronger neighboring excitations. This is particularly problematic in ultrafast nanophotonics, including optical sensing, nonlinear optics and nanolasers, where the broad resonant modes can overlap to a significant degree. Here, using plasmonic metamaterials, we demonstrate that coherent spectroscopy can conveniently isolate and detect such hidden high-order photonic excitations. Our results establish that the coherent spectroscopy is a powerful new tool. It complements the conventional methods for analysis of the electromagnetic response, and provides a new route to designing and characterizing novel photonic devices and materials.
ISSN: 2045-2322
DOI: 10.1038/srep44488
Schools: School of Physical and Mathematical Sciences 
Rights: © 2017 The Author(s) (Nature Publishing Group). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
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