Diez, I. orcid.org/0000-0001-8336-7438, Krysa, A. orcid.org/0000-0001-8320-7354 and Luxmoore, I.J. orcid.org/0000-0002-2650-0842 (2023) Inverse design of whispering-gallery nanolasers with tailored beam shape and polarization. ACS Photonics, 10 (4). pp. 968-976. ISSN 2330-4022
Abstract
Control over the shape and polarization of the beam emitted by a laser source is important in applications such as optical communications, optical manipulation and high-resolution optical imaging. In this paper, we present the inverse design of monolithic whispering-gallery nanolasers which emit along their axial direction with a tailored laser beam shape and polarization. We design and experimentally verify three types of submicron cavities, each one emitting into a different laser radiation mode: an azimuthally polarized doughnut beam, a radially polarized doughnut beam and a linearly polarized Gaussian-like beam. The measured output laser beams yield a field overlap with respect to the target mode of 92%, 96%, and 85% for the azimuthal, radial, and linearly polarized cases, respectively, thereby demonstrating the generality of the method in the design of ultracompact lasers with tailored beams.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Authors. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Keywords: | inverse design; topology optimization; nanolasers; whispering-gallery mode; far-field; beam tailoring |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 12 May 2023 09:57 |
Last Modified: | 12 May 2023 09:57 |
Status: | Published |
Publisher: | American Chemical Society (ACS) |
Refereed: | Yes |
Identification Number: | 10.1021/acsphotonics.2c01165 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:199028 |