Phase space tomography for measuring partially coherent fields of light sources

Rui Qi¹ and Miguel A Alonso^2,3
1Department of Physics and Optical Science, The University of North Carolina at Charlotte, NC, 28262, USA
²Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, 13013, France.
³The Institute of Optics, University of Rochester, Rochester, NY,14627, USA.

Dedicated to Professor Anna Consortini for her significant contributions and pioneering works in the field of atmospheric turbulence and her continuous commitment to promote optics at global level 

We implement experimentally a method for characterizing the two-point coherence properties of fields in two dimensions from measurements of their irradiance at different propagation distances. This method is a form of phase space tomography, based on a definition of the ambiguity function that is appropriate beyond the paraxial regime. In the experiment, a combination of two cylindrical lenses is used to create focused fields that vary slowly in one direction, so they behave approximately like two-dimensional fields. Four types of light sources (an incandescent lamp, a white LED, a green LED, and a green laser) with different coherence properties were measured. The results of the method for nonparaxial fields are compared to those based on the paraxial approximation. © Anita Publications. All rights reserved.
Doi: 10.54955/AJP.33.3-4.2024.205-217
Keywords: Imaging, Cameras, Resolution, LED, Incandescent lamp.

Peer Review Information
Method: Single- anonymous; Screened for Plagiarism? Yes
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