Coherent selection of invisible high-order electromagnetic excitations

Ming Lun Tseng, Xu Fang, Vassili Savinov, Pin Chieh Wu, Jun Yu Ou, Nikolay I. Zheludev, Din Ping Tsai

Research output: Contribution to journalArticle

22 Citations (Scopus)

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.

Original languageEnglish
Article number44488
JournalScientific reports
Volume7
DOIs
Publication statusPublished - 2017 Mar 15

All Science Journal Classification (ASJC) codes

  • General

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    Tseng, M. L., Fang, X., Savinov, V., Wu, P. C., Ou, J. Y., Zheludev, N. I., & Tsai, D. P. (2017). Coherent selection of invisible high-order electromagnetic excitations. Scientific reports, 7, [44488]. https://doi.org/10.1038/srep44488