Degree of polarization of a tightly focused partially coherent dark hollow beam
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- Dong, Y., Cai, Y. & Zhao, C. Appl. Phys. B (2011) 105: 405. doi:10.1007/s00340-011-4517-0
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Propagation of a linearly polarized partially coherent dark hollow beam (DHB) through a high numerical aperture (NA) thin lens is formulated. The tight focusing properties, such as the degree of polarization, the intensity distribution, and the degree of coherence, of a partially coherent DHB are investigated in detail. It is found that the focusing properties of a partially coherent DHB are closely determined by the initial coherence, beam order, and the NA of the thin lens.