Direct generation of vortex beam by changing the laser cavity mirror

Yihan Wang; Aimin Yan; Hongbo Zhang

doi:10.1117/12.3036119

8 November 2024 Direct generation of vortex beam by changing the laser cavity mirror

Yihan Wang, Aimin Yan, Hongbo Zhang

Proceedings Volume 13232, Advanced Lasers, High-Power Lasers, and Applications XV; 1323213 (2024) https://doi.org/10.1117/12.3036119
Event: SPIE/COS Photonics Asia, 2024, Nantong, Jiangsu, China

Conference Poster

Abstract

Vortex beams have been applied in multiple engineering and scientific applications due to their distinctive orbit angular momentum and vortex phase characteristics. Traditional methods suffer from complicated setup for the generation of vortex beams not only costly but also non-scalable. In this study, we propose a novel approach for the direct generation of vortex beams and coaxial muti-vortex beams through the use of laser resonator mirror. We have designed a diffractive output mirror of the laser resonator using Gerchberg-Saxton (GS) algorithm inspired by the mode matching theory and optical diffraction principles. Through the analysis of the pumping power in a four-level laser configuration, we have established correlations between ring-shaped pumping light and target vortex beam characteristics, thereby providing essential design guidelines for vortex beam generation within resonators.

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

Citation Download Citation

Yihan Wang, Aimin Yan, and Hongbo Zhang "Direct generation of vortex beam by changing the laser cavity mirror", Proc. SPIE 13232, Advanced Lasers, High-Power Lasers, and Applications XV, 1323213 (8 November 2024); https://doi.org/10.1117/12.3036119

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