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Impact of pressure-induced differential refractive index in Raman spectroscopy using hollow-core fibres

Impact of pressure-induced differential refractive index in Raman spectroscopy using hollow-core fibres
Impact of pressure-induced differential refractive index in Raman spectroscopy using hollow-core fibres
Raman spectroscopy is an attractive technique for simultaneous analysis of multiple gas species. Exploiting hollow-core microstructured optical fibres (HC-MOFs) for enhanced gas-light interaction length allows for extremely low detection limits of, e.g., 0.2 ppm methane [1] . Recently, we reported that extremely small changes in the refractive indices of the gases inside the core and cladding regions (as induced by differential gas pressure) significantly impact the optical properties of these fibres [2] . Here we exploit this effect to almost double the Raman signal.
IEEE
Kelly, Thomas William
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Davidson, Ian
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Rikimi, Shuichiro
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Jasion, Gregory
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Partridge, Matthew
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Brooks, William
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Foster, Michael
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Poletti, Francesco
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Richardson, David J.
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Horak, Peter
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Wheeler, Natalie
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Kelly, Thomas William
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Davidson, Ian
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Rikimi, Shuichiro
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Jasion, Gregory
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Partridge, Matthew
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Brooks, William
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Foster, Michael
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Poletti, Francesco
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Richardson, David J.
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Horak, Peter
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Wheeler, Natalie
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Kelly, Thomas William, Davidson, Ian, Rikimi, Shuichiro, Jasion, Gregory, Partridge, Matthew, Brooks, William, Foster, Michael, Poletti, Francesco, Richardson, David J., Horak, Peter and Wheeler, Natalie (2021) Impact of pressure-induced differential refractive index in Raman spectroscopy using hollow-core fibres. In 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE. 1 pp . (doi:10.1109/CLEO/Europe-EQEC52157.2021.9542579).

Record type: Conference or Workshop Item (Paper)

Abstract

Raman spectroscopy is an attractive technique for simultaneous analysis of multiple gas species. Exploiting hollow-core microstructured optical fibres (HC-MOFs) for enhanced gas-light interaction length allows for extremely low detection limits of, e.g., 0.2 ppm methane [1] . Recently, we reported that extremely small changes in the refractive indices of the gases inside the core and cladding regions (as induced by differential gas pressure) significantly impact the optical properties of these fibres [2] . Here we exploit this effect to almost double the Raman signal.

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Accepted/In Press date: 26 March 2021
Published date: 25 June 2021
Venue - Dates: CLEO/Europe-EQEC 2021 Virtual Conference, , Virtual, 2021-06-21 - 2021-06-25

Identifiers

Local EPrints ID: 452640
URI: http://eprints.soton.ac.uk/id/eprint/452640
PURE UUID: 3919fe5f-c2cf-43bc-8435-6f27ce939a62
ORCID for Gregory Jasion: ORCID iD orcid.org/0000-0001-5030-6479
ORCID for Francesco Poletti: ORCID iD orcid.org/0000-0002-1000-3083
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for Peter Horak: ORCID iD orcid.org/0000-0002-8710-8764
ORCID for Natalie Wheeler: ORCID iD orcid.org/0000-0002-1265-9510

Catalogue record

Date deposited: 11 Dec 2021 11:30
Last modified: 18 Mar 2024 03:18

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Contributors

Author: Ian Davidson
Author: Shuichiro Rikimi
Author: Gregory Jasion ORCID iD
Author: Matthew Partridge
Author: William Brooks
Author: Michael Foster
Author: Peter Horak ORCID iD
Author: Natalie Wheeler ORCID iD

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