Laboratory experiment reveals four-point coherence function dependence on the inner scale of turbulence during backscattering, highlighting conditions for enhanced optical coherence.
We present laboratory results for measurements of the four-point coherence function of a spherical wave in the region of coherence enhancement after backscattering through turbulence. Experimental results are compared with the theoretical predictions. We conclude that the shape of the four-point coherence function in our experiment depends on the value of the inner scale of turbulence.
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Bogaturov et al. (1996) studied this question.
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