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Proceedings Paper

Optimizing the rotating point spread function by SLM aided spiral phase modulation
Author(s): M. Baránek; Z. Bouchal
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Paper Abstract

We demonstrate the vortex point spread function (PSF) whose shape and the rotation sensitivity to defocusing can be controlled by a phase-only modulation implemented in the spatial or frequency domains. Rotational effects are studied in detail as a result of the spiral modulation carried out in discrete radial and azimuthal sections with different topological charges. As the main result, a direct connection between properties of the PSF and the parameters of the spiral mask is found and subsequently used for an optimal shaping of the PSF and control of its defocusing rotation rate. Experiments on the PSF rotation verify a good agreement with theoretical predictions and demonstrate potential of the method for applications in microscopy, tracking of particles and 3D imaging.

Paper Details

Date Published: 5 December 2014
PDF: 10 pages
Proc. SPIE 9441, 19th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 94410N (5 December 2014); doi: 10.1117/12.2087103
Show Author Affiliations
M. Baránek, Palacký Univ. (Czech Republic)
Z. Bouchal, Palacký Univ. (Czech Republic)


Published in SPIE Proceedings Vol. 9441:
19th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics
Agnieszka Popiolek-Masajada; Waclaw Urbanczyk, Editor(s)

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