Phase singularities of the transverse field component of high numerical aperture dark-hollow Gaussian beams in the focal region
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2011 ◽
Vol 284
(24)
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pp. 5517-5522
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2008 ◽
Vol 11
(1)
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pp. 015707
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2008 ◽
Vol 35
(3)
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pp. 401-405
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