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OALib Journal期刊
ISSN: 2333-9721
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Tightly Focusing of Circularly Polarized Vortex Beams through a Uniaxial Birefringent Crystal

Keywords: 42,25,Lc,42,25,Fx

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Abstract:

Under the approximation of small birefringence, the properties of circularly polarized vortex beams tightly focused through a uniaxial birefringent crystal are studied. With the proper combination of the topological charge and the birefringence, the small focus, the small bottle beam and the inverse c-shaped intensity profile can be obtained. The effects of the focal shift and the Strehl ratio on the birefringence are analysed. A relation between angular momentum (included spin and orbital) and topological Pancharatnam charge is also presented.

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