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Title: Phase-change perovskite microlaser with tunable polarization vortex
Authors: Tian, Jingyi
Adamo, Giorgio
Liu, Hailong
Wu, Mengfei
Klein, Maciej
Deng, Jie
Ang, Norman Soo Seng
Paniagua-Domínguez, Ramón
Liu, Hong
Kuznetsov, Arseniy I.
Soci, Cesare
Keywords: Science::Physics
Issue Date: 2023
Source: Tian, J., Adamo, G., Liu, H., Wu, M., Klein, M., Deng, J., Ang, N. S. S., Paniagua-Domínguez, R., Liu, H., Kuznetsov, A. I. & Soci, C. (2023). Phase-change perovskite microlaser with tunable polarization vortex. Advanced Materials, 35(1), 2207430-.
Project: A18A7b0058 
Journal: Advanced Materials 
Abstract: Metasurfaces supporting optical bound states in the continuum (BICs) are emerging as simple and compact optical cavities to realize polarization-vortex lasers. The winding of the polarization around the singularity defines topological charges which are generally set by the cavity design and cannot be altered without changing geometrical parameters. Here, a subwavelength-thin phase-change halide perovskite BIC metasurface functioning as a tunable polarization vortex microlaser is demonstrated. Upon the perovskite structural phase transitions, both its refractive index and gain vary substantially, inducing reversible and bistable switching between distinct polarization vortexes underpinned by opposite topological charges. Dynamic tuning and switching of the resulting vector beams may find use in microscopy imaging, particle trapping and manipulation, and optical data storage.
ISSN: 0935-9648
DOI: 10.1002/adma.202207430
Schools: School of Physical and Mathematical Sciences 
Research Centres: Centre for Disruptive Photonic Technologies (CDPT) 
Rights: © 2022 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. This is the peer reviewed version of the following article: Tian, J., Adamo, G., Liu, H., et al. Phase-change perovskite microlaser with tunable polarization vortex. Advanced Materials, 35(1), 2207430-., which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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