Rotating point spread function via pupil-phase engineering

A simple approach based on the use of a properly designed pupil-phase profile can yield a 3D point-spread function (PSF) that rotates with changing defocus, while keeping its transverse shape approximately invariant over ±3-4 waves of defocus. Unlike Gauss-Laguerre mode-based approaches, it generali...

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Bibliographic Details
Published in:Optics letters 2013-02, Vol.38 (4), p.585-587
Main Author: Prasad, Sudhakar
Format: Article
Language:English
Subjects:
Aberration
Encoding
Invariants
Point spread functions
Rotating
Three dimensional
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Summary:A simple approach based on the use of a properly designed pupil-phase profile can yield a 3D point-spread function (PSF) that rotates with changing defocus, while keeping its transverse shape approximately invariant over ±3-4 waves of defocus. Unlike Gauss-Laguerre mode-based approaches, it generalizes readily for encoding spherical aberration too via PSF rotation.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.38.000585