Display of spatial coherence
- 15 July 1998
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 23 (14) , 1084-1086
- https://doi.org/10.1364/ol.23.001084
Abstract
The mutual-intensity function plays a major role in characterizing quasi-monochromatic, partially coherent optical signals. We demonstrate an optical system for displaying the mutual intensity of a one-dimensional input beam. The experimental system is based on the fact that the mutual intensity of a signal can be expressed as the ensemble averaging of a cross-correlation operation between two related optical signals. The setup consists of a Sagnac interferometer followed by an optoelectronic joint transform correlator. Experimental results demonstrate the capabilities of the mutual-intensity analyzer.Keywords
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