Phase space tomography for measuring partially coherent fields of light sources - Archive ouverte HAL
Article Dans Une Revue Asian Journal of Physics Année : 2024

Phase space tomography for measuring partially coherent fields of light sources

Résumé

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.
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hal-04675976 , version 1 (23-08-2024)

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Rui Qi, Miguel Alonso. Phase space tomography for measuring partially coherent fields of light sources. Asian Journal of Physics , 2024, 33 (3-4), pp.205-217. ⟨10.54955/AJP.33.3-4.2024.205-217⟩. ⟨hal-04675976⟩
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