期刊
PHYSICAL REVIEW A
卷 105, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.105.033506
关键词
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资金
- Academy of Finland [308393, 310511, 320166]
- Joensuu University Foundation
- Academy of Finland (AKA) [308393, 308393] Funding Source: Academy of Finland (AKA)
The Poincare sphere representation of electromagnetic spectral two-point spatial coherence for fully polarized light beams is introduced. The singular-value decomposition of the cross-spectral density matrix is employed to establish a rigorous interpretation for the formalism in the context of partial polarization. The traditional polarization Poincare sphere is shown to be a limiting case of the coherence sphere. The results are expected to be useful in understanding the coherence-polarization state of optical beams in situations dealing with random light.
A Poincare sphere representation of electromagnetic spectral two-point spatial coherence was recently in-troduced for fully polarized light beams. In this work, we employ the singular-value decomposition of the cross-spectral density matrix and establish a rigorous interpretation for the formalism in the context of partial polarization. At a single point, the construction reduces to the traditional polarization Poincare sphere, which therefore can be regarded as a limiting case of the coherence sphere. The formalism is illustrated with paraxial blackbody radiation and Gaussian Schell-model beams. We expect our results will find use in understanding the coherence-polarization state of optical beams in situations dealing with random light.
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