Phase-change perovskite microlaser with tunable polarization vortex

Phase-change perovskite microlaser with tunable polarization vortex

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 b...

Full description

Saved in:
Bibliographic Details
Main 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
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2023
Subjects:
Science::Physics
Optical Bistability
Polarization Vortices
Online Access:https://hdl.handle.net/10356/164397
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
Description
Summary: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.

Similar Items