Retrieval of the cross-spectral density propagating in free space
- 1 October 1999
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America A
- Vol. 16 (10) , 2447-2452
- https://doi.org/10.1364/josaa.16.002447
Abstract
A technique for retrieving the cross-spectral density propagating in free space across an arbitrary plane is proposed. Theoretical descriptions are based on the propagation law of the cross-spectral density described in the Fourier domain. Results of an experiment demonstrating retrieval of the cross-spectral density across an arbitrary reference plane are also reported. The cross-spectral density in the observation area is measured by use of a wave-front-folded interferometer, and the retrieved cross-spectral densities and the intensity distribution agree well with the theoretical expectations.Keywords
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