Axial superlocalization with vortex beams

Koutny, D.; Hradil, Z.; Rehacek, J.; Sanchez-Soto, Luis

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Axial superlocalization with vortex beams

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Sanchez-Soto, Luis
Quantumness, Tomography, Entanglement, and Codes, Leuchs Emeritus Group, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Koutny, D., Hradil, Z., Rehacek, J., & Sanchez-Soto, L. (2021). Axial superlocalization with vortex beams. Quantum Science and Technology, 6(2): 025021.

Cite as: https://hdl.handle.net/21.11116/0000-0008-8FA8-A

Abstract

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.