Coherent excitation-selective spectroscopy dataset

Fang, Xu; Tseng, Ming Lun; Tsai, Din Ping; Желудев, Н.И.

doi:10.5258/soton/384842

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2016

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“…The data from this paper can be obtained from the University of Southampton ePrints research repository [41].…”

Section: Discussionmentioning

confidence: 99%

Coherent Excitation-Selective Spectroscopy of Multipole Resonances

Tseng

Tsai

et al. 2016

Phys. Rev. Applied

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Blodgett films play key roles in modern technologies. For such films optical interrogation is the main and often the only practical method of characterization. Here, we show that characterization of the optical response of thin films can be greatly improved with a type of coherent spectroscopy using two counterpropagating beams of light. The spectroscopy is selective to particular types of multipole resonances that form the absorption spectrum of the film, and therefore can reveal lines that are hidden in conventional absorption spectroscopy. We explicitly demonstrate selectivity of this spectroscopy in a series of proof-of-principle experiments with plasmonic metamaterial arrays designed to exhibit different multipole resonances. We further demonstrate the analytic potential of this spectroscopy by extracting the hidden resonance from the spectrum of a complex nanostructure.

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“…The data from this paper can be obtained from the University of Southampton ePrints research repository [41].…”

Section: Discussionmentioning

confidence: 99%