Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Axial superlocalization with vortex beams   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.

1
The categories of this paper are: cs
2
The categories of this paper are: math
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph