Characterization of polarization fluctuations in random electromagnetic beams

Details Characterization of polarization fluctuations in random electromagnetic beams Characterization of polarization fluctuations in random electromagnetic beams

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009njph...11g3004s&link_type=abstract

New Journal of Physics, Volume 11, Issue 7, pp. 073004 (2009).

Physics

2

Scientific paper

Two stationary, partially polarized electromagnetic beams with equal degrees of polarization may exhibit completely different time evolutions of the instantaneous polarization state. In this work, we derive a statistical quantity that describes the rate at which the field intensity in the beam, on average, is redistributed between the beam's polarization state at any time and the state orthogonal to it. This method allows one to treat the dynamical properties of the polarization fluctuations both theoretically and experimentally. We demonstrate the method by applying it to important special cases, such as fields obeying Gaussian statistics, black-body radiation pencils and depolarized laser beams. We also prove that a geometric approach introduced earlier is closely connected with the present model.

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