Scatterer induced Fano resonances in WS2 coated microsphere resonator
Scatterer induced Fano resonances in WS2 coated microsphere resonator
We report the effect of coating of tungsten disulphide (WS2) on fiberized silica microsphere resonator. Transmission measurements of the microsphere resonator have been done with the help of a tunable laser source and a tapered fiber. The quality (Q) factors have been measured for bare and WS2 coated microcavities. Results indicate that although there is a decrease of Q-factor from 107 to 105 after coating, it results in a cleaner spectrum. Cleaning of WGM spectra becomes important for applications such as sensing where observing a single mode resonance is essential in estimating the shift precisely. Asymmetric Fano-type profile has been observed in the clean spectrum due to the interaction of WS2 with the uncoated WGMs at 1550 nm.
Fano resonances, Microsphere; 2D materials, Transition metal dichalcogenides, Whispering gallery modes
1-7
Bhattacharya, Shubhayan
64fa4af8-6833-4075-b4ad-f86b787a656f
Veluthandath, Aneesh V.
6a183413-e10f-4374-bc64-a33bf7fd9cfa
Huang, C. C.
825f7447-6d02-48f6-b95a-fa33da71f106
Murugan, Ganapathy Senthil
a867686e-0535-46cc-ad85-c2342086b25b
Bisht, Prem B.
9e617371-071b-48b1-9f33-2801ea08cace
1 April 2020
Bhattacharya, Shubhayan
64fa4af8-6833-4075-b4ad-f86b787a656f
Veluthandath, Aneesh V.
6a183413-e10f-4374-bc64-a33bf7fd9cfa
Huang, C. C.
825f7447-6d02-48f6-b95a-fa33da71f106
Murugan, Ganapathy Senthil
a867686e-0535-46cc-ad85-c2342086b25b
Bisht, Prem B.
9e617371-071b-48b1-9f33-2801ea08cace
Bhattacharya, Shubhayan, Veluthandath, Aneesh V., Huang, C. C., Murugan, Ganapathy Senthil and Bisht, Prem B.
(2020)
Scatterer induced Fano resonances in WS2 coated microsphere resonator.
Lecler, Sylvain, Astratov, Vasily N. and Minin, Igor V.
(eds.)
In Photonics and Plasmonics at the Mesoscale.
vol. 11368,
SPIE.
.
(doi:10.1117/12.2555631).
Record type:
Conference or Workshop Item
(Paper)
Abstract
We report the effect of coating of tungsten disulphide (WS2) on fiberized silica microsphere resonator. Transmission measurements of the microsphere resonator have been done with the help of a tunable laser source and a tapered fiber. The quality (Q) factors have been measured for bare and WS2 coated microcavities. Results indicate that although there is a decrease of Q-factor from 107 to 105 after coating, it results in a cleaner spectrum. Cleaning of WGM spectra becomes important for applications such as sensing where observing a single mode resonance is essential in estimating the shift precisely. Asymmetric Fano-type profile has been observed in the clean spectrum due to the interaction of WS2 with the uncoated WGMs at 1550 nm.
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More information
Published date: 1 April 2020
Venue - Dates:
Photonics and Plasmonics at the Mesoscale 2020, , None, France, 2020-04-06 - 2020-04-10
Keywords:
Fano resonances, Microsphere; 2D materials, Transition metal dichalcogenides, Whispering gallery modes
Identifiers
Local EPrints ID: 444647
URI: http://eprints.soton.ac.uk/id/eprint/444647
ISSN: 0277-786X
PURE UUID: 3c7ba00f-0abe-47bc-a53e-7c9b7728746e
Catalogue record
Date deposited: 28 Oct 2020 18:03
Last modified: 18 Mar 2024 03:56
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Contributors
Author:
Shubhayan Bhattacharya
Author:
Prem B. Bisht
Editor:
Sylvain Lecler
Editor:
Vasily N. Astratov
Editor:
Igor V. Minin
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