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Opt Lett. 2007 Dec 1;32(23):3400-1.

Polarization invariance in beam propagation.

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  • 1Department of Physics and Astronomy, University of Rochester, NY 14627, USA.


It has been known for some time that the degree of polarization of a light beam may change on propagation, even in free space. In this Letter we derive sufficiency conditions for the degree of polarization of a beam generated by a uniformly polarized stochastic, electromagnetic source of a wide class to be the same throughout the far zone and in the source plane.

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