Correlation singularities of partially coherent beams with multi-Gaussian correlation function
Abstract
Correlation singularities of partially coherent beams with multi-Gaussian correlation function (i.e., multi-Gaussian Schell-model beams) are studied. It is shown that there exist correlation singularities for scalar multi-Gaussian Schell-model (MGSM) beams, both in the source plane and in the output plane. We find the simple relation between the correlation singularities and the beam index M of MGSM beams, i.e., the number of ring dislocations equals M - 1, which may be used to determine the beam index M.
- Publication:
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Physics Letters A
- Pub Date:
- August 2017
- DOI:
- 10.1016/j.physleta.2017.05.059
- Bibcode:
- 2017PhLA..381.2550Z
- Keywords:
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- Partially coherent beams;
- Multi-Gaussian correlation;
- Correlation singularities