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Topological bulk lasing modes using an imaginary gauge field

Wong, Stephan and Oh, Sang Soon ORCID: 2021. Topological bulk lasing modes using an imaginary gauge field. Physical Review Research 3 (3) , 033042. 10.1103/PhysRevResearch.3.033042

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Topological edge modes, which are robust against disorders, have been used to enhance the spatial stability of lasers. Recently, it was revealed that topological lasers can be further stabilized using a topological phase in non- Hermitian photonic topological insulators. Here we propose a procedure to realize topologically protected modes extended over a d-dimensional bulk by introducing an imaginary gauge field. This generalizes the idea of zero-energy extended modes in the one-dimensional Su-Schrieffer-Heeger lattice into higher dimensional lattices, allowing a d-dimensional bulk mode that is topologically protected. Furthermore, we numerically demonstrate that the topological bulk lasing mode can facilitate high temporal stability superior to topological edge-mode lasers. Using an exemplified topological extended mode in the kagome lattice, we show that large regions of stability exist in its parameter space.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Advanced Research Computing @ Cardiff (ARCCA)
Physics and Astronomy
Subjects: Q Science > QC Physics
Additional Information: An Erratum for this article can be seen at
Publisher: American Physical Society
ISSN: 2643-1564
Funders: European Regional Development Fund
Related URLs:
Date of First Compliant Deposit: 14 July 2021
Date of Acceptance: 16 June 2021
Last Modified: 17 Jun 2024 14:34

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