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Proceedings Paper

Measurement of the four-dimensional Wigner distribution of paraxial light sources
Author(s): B. Eppich; G. Mann; H. Weber
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Paper Abstract

The complete knowledge and description of light sources is a fundamental base of optical design. Partially coherent, paraxial light sources of homogeneous polarisation state are represented by the four-dimensional Wigner distribution function, which contains all information on amplitude, phase relations and spatial coherence. Hence, knowledge of the Wigner distribution enables the prediction of power density distributions after propagation through a wide range of optical systems by numerical simulation. A simple optical setup consisting of a spherical lens, a cylindrical lens, and a CCD camera can be used to experimentally retrieve the Wigner distribution function of a spatially confined light source by a tomographic reconstruction scheme. This paper briefly introduces the Wigner distribution and outline the reconstruction scheme. Measurements on partially coherent laser beams are presented including examples of successful predictions of power density distributions behind some optical systems.

Paper Details

Date Published: 14 October 2005
PDF: 11 pages
Proc. SPIE 5962, Optical Design and Engineering II, 59622D (14 October 2005); doi: 10.1117/12.624812
Show Author Affiliations
B. Eppich, Institute of Optics, Technische Univ. Berlin (Germany)
G. Mann, Institute of Optics, Technische Univ. Berlin (Germany)
H. Weber, Institute of Optics, Technische Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 5962:
Optical Design and Engineering II
Laurent Mazuray; Rolf Wartmann, Editor(s)

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