Whittaker, C.E. orcid.org/0000-0002-6105-4315, Isoniemi, T. orcid.org/0000-0003-0238-1006, Lovett, S. orcid.org/0000-0002-3137-8060 et al. (8 more authors) (2021) Exciton–polaritons in GaAs-based slab waveguide photonic crystals. Applied Physics Letters, 119 (18). 181101. ISSN 0003-6951
Abstract
We report the observation of bandgaps for low loss exciton-polaritons propagating outside the light cone in GaAs-based planar waveguides patterned into two-dimensional photonic crystals. By etching square lattice arrays of shallow holes into the uppermost layer of our structure, we open gaps on the order of 10 meV in the photonic mode dispersion, whose size and light-matter composition can be tuned by proximity to the strongly coupled exciton resonance. We demonstrate gaps ranging from almost fully photonic to highly excitonic. Opening a gap in the exciton-dominated part of the polariton spectrum is a promising first step toward the realization of quantum-Hall-like states arising from topologically nontrivial hybridization of excitons and photons.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http:// creativecommons.org/licenses/by/4.0/). https://doi.org/10.1063/5.0071248 |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/N031776/1 ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/R04385X/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 14 Apr 2023 14:00 |
Last Modified: | 14 Apr 2023 14:00 |
Status: | Published |
Publisher: | AIP Publishing |
Refereed: | Yes |
Identification Number: | 10.1063/5.0071248 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:198078 |