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Proceedings Paper

Phase retrieval from the optical vortex scanning microscopy
Author(s): Agnieszka Popiolek-Masajada; Jan Masajada; Mateusz Szatkowski; Kornelia Indykiewicz; Regina Paszkiewicz
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Paper Abstract

We consider an optical system in which the optical vortex moves inside the focused Gaussian beam. The vortex movement is due to the vortex lens inserted in front of the focusing objective. We gradually shift the vortex lens along the x-axis which is perpendicular to the axis of laser beam propagation (z-axis). This causes that in the image plane vortex moves along a straight line but the line inclination depends on the position of the observation plane. There is a characteristic position of the observation plane, in which the vortex trajectory is perpendicular to the vortex plate shift. We call this plane a critical plane. The critical plane is sensitive to small phase variations which can be introduce by a transparent sample. We propose a way of retrieving the phase profile (at the critical plane) of such a beam. Our procedure is based on the Fourier transform phase demodulation method. We also investigate how the system reacts to the known phase variations introduced into the critical plane.

Paper Details

Date Published: 5 December 2014
PDF: 7 pages
Proc. SPIE 9441, 19th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 94410Q (5 December 2014); doi: 10.1117/12.2074725
Show Author Affiliations
Agnieszka Popiolek-Masajada, Wroclaw Univ. of Technology (Poland)
Jan Masajada, Wroclaw Univ. of Technology (Poland)
Mateusz Szatkowski, Wroclaw Univ. of Technology (Poland)
Kornelia Indykiewicz, Wroclaw Univ. of Technology (Poland)
Regina Paszkiewicz, Wroclaw Univ. of Technology (Poland)

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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