Constant ring width of the Laguerre–Gaussian vortex beams

Ao Tang; Bin Lan; Feng Shen

doi:10.1117/12.2587111

2 December 2020 Constant ring width of the Laguerre–Gaussian vortex beams

Ao Tang, Bin Lan, Feng Shen

Proceedings Volume 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics; 117171S (2020) https://doi.org/10.1117/12.2587111
Event: 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 2020, Shanghai, China

Abstract

We studied ring width of the Laguerre–Gaussian vortex beams, which is the outer radius minus the inner radius. Combining theoretical analysis and numerical simulation, the approximate expression of the ring width is obtained. From the expression, we find that the ring width is independent of the topological charge, and increases with the increase of the waist radius at z=0 of the host Gaussian beam and the propagation distance. This research has good application prospects in optical tweezers technology and OAM optical communication.

Citation Download Citation

Ao Tang, Bin Lan, and Feng Shen "Constant ring width of the Laguerre–Gaussian vortex beams", Proc. SPIE 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 117171S (2 December 2020); https://doi.org/10.1117/12.2587111

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