Tervo J, Setälä T, Roueff A, Réfrégier P, Friberg AT. Two-point Stokes parameters: interpretation and properties.
OPTICS LETTERS 2009;
34:3074-3076. [PMID:
19838230 DOI:
10.1364/ol.34.003074]
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Abstract
Whereas the classic Stokes parameters are measures of intensity, the recently introduced two-point Stokes parameters characterize spatial coherence. It is shown that in analogy to the Stokes parameters, the two-point parameters have a physical interpretation as sums and differences of (scalar) cross-spectral density functions of specific electric-field components. A measurement scheme and several physical consequences of the two-point parameters are discussed.
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