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Vortex nanolaser based on a photonic disclination cavity

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Title
Vortex nanolaser based on a photonic disclination cavity
Author(s)
Hwang, Min-Soo; Kim, Ha-Reem; Kim, Jungkil; Bohm-Jung Yang; Kivshar, Yuri; Park, Hong-Gyu
Publication Date
2024-03
Journal
Nature Photonics, v.18, pp.286 - 293
Publisher
Nature Pub. Group
Abstract
Optical vector vortex beams provide additional degrees of freedom for spatially distinguishable channels in data transmission. Although several coherent light sources carrying a topological singularity have been reported, it remains challenging to develop a general strategy for designing ultra-small, high-quality photonic nanocavities that generate and support optical vortex modes. Here we demonstrate wavelength-scale, low-threshold, vortex and anti-vortex nanolasers in a C 5 symmetric optical cavity formed by a topological disclination. Various photonic disclination cavities are designed and analysed using the similarities between tight-binding models and optical simulations. Unique resonant modes are strongly confined in these cavities, which exhibit wavelength-scale mode volumes and retain topological charges in the disclination geometries. In the experiment, the optical vortices of the lasing modes are clearly identified by measuring polarization-resolved images, Stokes parameters and self-interference patterns. Demonstration of vortex nanolasers using our facile design procedure will pave the way towards next-generation optical communication systems. © 2023, The Author(s).
URI
https://pr.ibs.re.kr/handle/8788114/14853
DOI
10.1038/s41566-023-01338-2
ISSN
1749-4885
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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