Characterization of polarization fluctuations in random electromagnetic beams

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2009
Major/Subject
Mcode
Degree programme
Language
en
Pages
073004
Series
New Journal of Physics, Volume 11, Issue 7
Abstract
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.
Description
Keywords
polarization fluctuations, electromagnetic beam fields, random electromagnetic beams, dynamical properties, polarization state
Other note
Citation
Setälä, Tero & Shevchenko, Andriy & Kaivola, Matti & Friberg, Ari T.. 2009. Characterization of polarization fluctuations in random electromagnetic beams. New Journal of Physics. Volume 11, Issue 7. ISSN 1367-2630 (electronic). DOI: 10.1088/1367-2630/11/7/073004.