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Coherent excitation-selective spectroscopy of multipole resonances

Coherent excitation-selective spectroscopy of multipole resonances
Coherent excitation-selective spectroscopy of multipole resonances
Thin films of functional materials, from graphene to semiconductor heterostructures, from nano-membranes to Langmuir-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 optical response of thin films can be greatly improved with a new type of coherent spectroscopy using two counter-propagating beams of light. The new spectroscopy is selective to particular types of multipole resonances that form the absorption spectrum of the film, therefore can reveal lines that are hidden in conventional absorption spectroscopy. We explicitly demonstrated 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 analytic potential of this spectroscopy by extracting hidden resonance from the spectrum of a complex nanostructure.
1-15
Fang, Xu
96b4b212-496b-4d68-82a4-06df70f94a86
Tseng, Ming Lun
cc9bb809-91ca-4648-bb5a-04c1b84d3c22
Tsai, Din Ping
29dbf01e-c22a-45a5-95b3-839a185d1779
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Fang, Xu
96b4b212-496b-4d68-82a4-06df70f94a86
Tseng, Ming Lun
cc9bb809-91ca-4648-bb5a-04c1b84d3c22
Tsai, Din Ping
29dbf01e-c22a-45a5-95b3-839a185d1779
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6

Fang, Xu, Tseng, Ming Lun, Tsai, Din Ping and Zheludev, Nikolai (2015) Coherent excitation-selective spectroscopy of multipole resonances. Physical Review Applied, 1-15. (doi:10.1103/PhysRevApplied.5.014010). (In Press)

Record type: Article

Abstract

Thin films of functional materials, from graphene to semiconductor heterostructures, from nano-membranes to Langmuir-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 optical response of thin films can be greatly improved with a new type of coherent spectroscopy using two counter-propagating beams of light. The new spectroscopy is selective to particular types of multipole resonances that form the absorption spectrum of the film, therefore can reveal lines that are hidden in conventional absorption spectroscopy. We explicitly demonstrated 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 analytic potential of this spectroscopy by extracting hidden resonance from the spectrum of a complex nanostructure.

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Accepted/In Press date: 3 December 2015
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 384846
URI: https://eprints.soton.ac.uk/id/eprint/384846
PURE UUID: e43e83b2-901c-4e5d-a0ef-f0495eef1b26
ORCID for Xu Fang: ORCID iD orcid.org/0000-0003-1735-2654
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 11 Jan 2016 12:55
Last modified: 15 Oct 2019 00:54

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