Phase singularities in microscopic imaging

Jan Masajada

doi:10.1117/12.918242

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22 November 2011 Phase singularities in microscopic imaging

Jan Masajada

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Proceedings Volume 8338, Tenth International Conference on Correlation Optics; 833806 (2011) https://doi.org/10.1117/12.918242
Event: Correlation Optics 2011, 2011, Chernivsti, Ukraine

Abstract

In this paper the concept of optical vortex scanning microscope (OVSM) is presented. In the OVSM a sample is scanned by the focused laser beam with optical vortex. The beam possessing an optical vortex contains a line along which the phase is undetermined. At image plane this line is seen as the single point. The position of such special singular point (vortex points) changes when the beam is diffracted by a sample. The vortex point sensitivity is higher than the sensitivity of the whole focused beam. In the OVSM the position of vortex point is traced while scanning the sample. In this paper the behavior of focused vortex beam, when scanning the phase step is studied. This simple example illustrates both the OVSM idea and the method for data analysis.

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Jan Masajada "Phase singularities in microscopic imaging", Proc. SPIE 8338, Tenth International Conference on Correlation Optics, 833806 (22 November 2011); https://doi.org/10.1117/12.918242

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