Advancing nanolasers based on topological cavities: vortex disclination nanolaser

Min-Soo Hwang; Ha-Reem Kim; Bohm-Jung Yang; Yuri Kivshar; Hong-Gyu Park

doi:10.1117/12.3002559

13 March 2024 Advancing nanolasers based on topological cavities: vortex disclination nanolaser

Min-Soo Hwang, Ha-Reem Kim, Bohm-Jung Yang, Yuri Kivshar, Hong-Gyu Park

Proceedings Volume 12897, High Contrast Metastructures XIII; 128970D (2024) https://doi.org/10.1117/12.3002559
Event: SPIE OPTO, 2024, San Francisco, California, United States

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 C5 symmetric optical cavity formed by a topological disclination. Various photonic disclination cavities are designed and analyzed 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.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Min-Soo Hwang, Ha-Reem Kim, Bohm-Jung Yang, Yuri Kivshar, and Hong-Gyu Park "Advancing nanolasers based on topological cavities: vortex disclination nanolaser", Proc. SPIE 12897, High Contrast Metastructures XIII, 128970D (13 March 2024); https://doi.org/10.1117/12.3002559

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