Visible skyrmion praseodymium laser in red and orange

William R. Kerridge-Johns; A. Srinivasa Rao; Takashige Omatsu

doi:10.1117/12.3002686

12 March 2024 Visible skyrmion praseodymium laser in red and orange

William R. Kerridge-Johns, A. Srinivasa Rao, Takashige Omatsu

Proceedings Volume 12901, Complex Light and Optical Forces XVIII; 1290106 (2024) https://doi.org/10.1117/12.3002686
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Recently investigated free-space optical skyrmion beams have an exciting array of application areas, in particular for material science. Current generation methods typically rely on expensive spatial light modulators and bulky apparatus. We demonstrate a laser source for optical skyrmion beams at red (640nm) and orange (607nm) wavelengths using a praseodymium:YLF gain medium. The interferometric output coupler gave a high-quality first order vortex Laguerre-Gaussian output, which was combined with the fundamental Gaussian output and converted into polarisation skyrmions. Bloch-, N´eel-, and anti-skyrmions were generated, which were propagation stable and had measure skyrmion numbers close to 1. This low-cost and compact source should be useful to diversify optical skyrmion research and could be easily adapted to other laser gain media and wavelengths.

Conference Presentation

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

Citation Download Citation

William R. Kerridge-Johns, A. Srinivasa Rao, and Takashige Omatsu "Visible skyrmion praseodymium laser in red and orange", Proc. SPIE 12901, Complex Light and Optical Forces XVIII, 1290106 (12 March 2024); https://doi.org/10.1117/12.3002686

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