Designing fiber-tip optical resonators for strong field enhancement
Designing fiber-tip optical resonators for strong field enhancement
For many applications in quantum technology or optical sensing strong coupling between light and micro- or nano-particles is highly desirable. Fabry-Perot optical resonators formed between mirror-coated tips of two optical fibers lead to field enhancement and can be exploited for strong coupling of light to a particle, but the enhancement factor is still limited by geometrical restrictions.
In our work we investigate new designs of such fiber-tip resonators where the shape of the mirrors is optimized to create interference patterns inside the resonator that lead to high peak intensities at the position of the particle. We use a range of approaches, such as analytical theory, evolutionary algorithms, and machine learning, to find the best designs. Our results suggest that significant field enhancement is possible with mirror shapes that deviate only moderately from spherical shapes. These can be fabricated by laser ablation, focused ion beam milling, or micromachining of fiber ends and could give rise to more precise optical sensors and faster quantum information processors.
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Karpov, Denis
87bed409-5074-4b29-a54a-1bcfa5dae435
11 June 2022
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Karpov, Denis
87bed409-5074-4b29-a54a-1bcfa5dae435
Horak, Peter and Karpov, Denis
(2022)
Designing fiber-tip optical resonators for strong field enhancement.
2nd Annual Conference on Lasers, Optics, Photonics, Sensors, and Biophotonics, Fort Lauderdale/online, United States.
10 - 12 Jun 2022.
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Conference or Workshop Item
(Paper)
Abstract
For many applications in quantum technology or optical sensing strong coupling between light and micro- or nano-particles is highly desirable. Fabry-Perot optical resonators formed between mirror-coated tips of two optical fibers lead to field enhancement and can be exploited for strong coupling of light to a particle, but the enhancement factor is still limited by geometrical restrictions.
In our work we investigate new designs of such fiber-tip resonators where the shape of the mirrors is optimized to create interference patterns inside the resonator that lead to high peak intensities at the position of the particle. We use a range of approaches, such as analytical theory, evolutionary algorithms, and machine learning, to find the best designs. Our results suggest that significant field enhancement is possible with mirror shapes that deviate only moderately from spherical shapes. These can be fabricated by laser ablation, focused ion beam milling, or micromachining of fiber ends and could give rise to more precise optical sensors and faster quantum information processors.
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LOPS2022_abstract
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Submitted date: 22 February 2022
Accepted/In Press date: 26 April 2022
Published date: 11 June 2022
Venue - Dates:
2nd Annual Conference on Lasers, Optics, Photonics, Sensors, and Biophotonics, Fort Lauderdale/online, United States, 2022-06-10 - 2022-06-12
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Local EPrints ID: 467553
URI: http://eprints.soton.ac.uk/id/eprint/467553
PURE UUID: 9b631c14-0c28-4f4a-975d-9b15cf1b5423
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Date deposited: 13 Jul 2022 17:00
Last modified: 17 Mar 2024 02:55
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Author:
Denis Karpov
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