2021/03/06 by Dominik Koutný, Koutny, D., Z. Hradil +5
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Advanced Fluorescence Microscopy Techniques #Digital Holography and Microscopy #FOS: Physical sciences #Optics (physics.optics) #Orbital Angular Momentum in Optics #Quantum Physics (quant-ph)
paper · pdf · doi:10.48550/arxiv.2103.04170
openalex publication_date 2021/03/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Improving axial resolution is of paramount importance for three-dimensional optical imaging systems. Here, we investigate the ultimate precision in axial localization using vortex beams. For Laguerre-Gauss beams, this limit can be achieved with just an intensity scan. The same is not true for superpositions of Laguerre-Gauss beams, in particular for those with intensity profiles that rotate on defocusing. Microscopy methods based on rotating vortex beams may thus benefit from replacing traditional intensity sensors with advanced mode-sorting techniques.