Figure | Schematics, sample, and characterizations of the vortex beam with varying ellipticity. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure | Schematics, sample, and characterizations of the vortex beam with varying ellipticity.

Caption

a, Schematics of our proposed meta-device to generate a vortex beam with varying ellipticity. b, Interference pattern between transmitted light and a spherical wave, recorded by our CCD. c, The SEM image of fabricated sample. d, Optical images recorded by our CCD for the generated VOF after passing through a linear polarizer with tilting angle 90°.

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by Dongyi Wang, Feifei Liu, Tong Liu, Shulin Sun, Qiong He and Lei Zhou

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