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Strong coupling in a microcavity containing β- carotene

Strong coupling in a microcavity containing β- carotene
Strong coupling in a microcavity containing β- carotene
We have fabricated an open-cavity microcavity structure containing a thin film of the biologically-derived molecule β-carotene. We show that the β-carotene absorption can be described in terms of a series of Lorentzian functions that approximate the 0-0, 0-1, 0-2, 0-3 and 0-4 electronic and vibronic transitions. On placing this molecular material into a microcavity, we obtain anti-crossing between the cavity mode and the 0-1 vibronic transition, however other electronic and vibronic transitions remain in the intermediate or weak-coupling regime due to their lower oscillator strength and broader linewidth. We discuss the consequences of strong-coupling for the possible modification of photosynthetic processes, or a re-ordering of allowed and optically-forbidden states.
1094-4087
3320-3327
Grant, Richard T.
f020d9f6-b6b6-4ed6-8291-0c93f6dd4121
Jayaprakash, Rahul
fecb7dcf-cf07-4d22-a34e-6338210874e4
Coles, David M.
767b66af-227f-4bd0-a99e-d4ae77cf5106
Musser, Andrew
1ef12e98-21f4-42bf-8226-846043cf60bf
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Samuel, Ifor D.W.
4ab17946-c306-4b48-809e-cc1498df6f62
Turnbull, Graham A.
d6db8bad-c72a-4586-abc3-0887578759a1
Clark, Jenny
e7771f4d-3598-43c3-930b-d42d3b07c30f
Lidzey, David G.
4c1f0189-29db-482f-896b-b90f28909baf
Grant, Richard T.
f020d9f6-b6b6-4ed6-8291-0c93f6dd4121
Jayaprakash, Rahul
fecb7dcf-cf07-4d22-a34e-6338210874e4
Coles, David M.
767b66af-227f-4bd0-a99e-d4ae77cf5106
Musser, Andrew
1ef12e98-21f4-42bf-8226-846043cf60bf
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Samuel, Ifor D.W.
4ab17946-c306-4b48-809e-cc1498df6f62
Turnbull, Graham A.
d6db8bad-c72a-4586-abc3-0887578759a1
Clark, Jenny
e7771f4d-3598-43c3-930b-d42d3b07c30f
Lidzey, David G.
4c1f0189-29db-482f-896b-b90f28909baf

Grant, Richard T., Jayaprakash, Rahul, Coles, David M., Musser, Andrew, De Liberato, Simone, Samuel, Ifor D.W., Turnbull, Graham A., Clark, Jenny and Lidzey, David G. (2018) Strong coupling in a microcavity containing β- carotene Optics Express, 26, (3), pp. 3320-3327. (doi:10.1364/OE.26.003320).

Record type: Article

Abstract

We have fabricated an open-cavity microcavity structure containing a thin film of the biologically-derived molecule β-carotene. We show that the β-carotene absorption can be described in terms of a series of Lorentzian functions that approximate the 0-0, 0-1, 0-2, 0-3 and 0-4 electronic and vibronic transitions. On placing this molecular material into a microcavity, we obtain anti-crossing between the cavity mode and the 0-1 vibronic transition, however other electronic and vibronic transitions remain in the intermediate or weak-coupling regime due to their lower oscillator strength and broader linewidth. We discuss the consequences of strong-coupling for the possible modification of photosynthetic processes, or a re-ordering of allowed and optically-forbidden states.

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Accepted/In Press date: 21 December 2017
e-pub ahead of print date: 31 January 2018
Published date: 5 February 2018

Identifiers

Local EPrints ID: 417638
URI: https://eprints.soton.ac.uk/id/eprint/417638
ISSN: 1094-4087
PURE UUID: d5dbcc63-7499-473b-a6dc-e439b4428994

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Date deposited: 08 Feb 2018 17:30
Last modified: 22 Feb 2018 17:31

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Contributors

Author: Richard T. Grant
Author: Rahul Jayaprakash
Author: David M. Coles
Author: Andrew Musser
Author: Simone De Liberato
Author: Ifor D.W. Samuel
Author: Graham A. Turnbull
Author: Jenny Clark
Author: David G. Lidzey

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