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Opt Lett. 2005 Feb 1;30(3):224-6.

Longitudinal pure spatial coherence of a light field with wide frequency and angular spectra.

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Department of Optics, Saratov State University, 155 Moskovskaya Ulitsa, Saratov 410012, Russia.


We have observed the longitudinal pure spatial coherence of a light field in an interference experiment when the length of the temporal coherence is significantly smaller than the length of the longitudinal spatial coherence of the light field. We introduce into consideration new spatial and temporal scales of a light field: the length of the coherent (free) run and the coherent time (the time of life) of a wave train.

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