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Spatial correlations and degree of polarization in homogeneous electromagnetic fields
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
2003 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 28, no 13, p. 1069-1071Article in journal (Refereed) Published
Abstract [en]

We consider stationary electromagnetic fields modeled as superpositions of unpolarized and angularly uncorrelated plane waves and show that in an isotropic case the electric cross-spectral tensor is proportional to the imaginary part of the Green tensor. This is as for blackbody radiation, but here the field need not be in thermal equilibrium. We also evaluate the degree of polarization for a homogeneous but nonisotropic field for which the plane waves propagate within a cone of angles. The results are compared with the known polarization properties of blackbody radiation.

Place, publisher, year, edition, pages
2003. Vol. 28, no 13, p. 1069-1071
Keywords [en]
coherence properties, radiation, waves
Identifiers
URN: urn:nbn:se:kth:diva-22609ISI: 000183691500001OAI: oai:DiVA.org:kth-22609DiVA, id: diva2:341307
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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