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Zhixiang Wu

Researcher at Chongqing University

Publications -  13
Citations -  283

Zhixiang Wu is an academic researcher from Chongqing University. The author has contributed to research in topics: Lens (optics) & Diffraction. The author has an hindex of 8, co-authored 13 publications receiving 179 citations. Previous affiliations of Zhixiang Wu include Southwest University of Science and Technology.

Papers
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Creation of Sub-diffraction Longitudinally Polarized Spot by Focusing Radially Polarized Light with Binary Phase Lens.

TL;DR: A planar binary phase lens is proposed and the generation of a longitudinally polarized sub-diffraction focal spot is experimentally demonstrated by focusing radially polarized light.
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Generation of a sub-diffraction hollow ring by shaping an azimuthally polarized wave.

TL;DR: A planar sub-diffraction diffractive lens is proposed, which has an ultra-long focal length of 600 λ and small numerical aperture of 0.64, and a sub- diffraction hollow ring is experimentally created by shaping an azimuthally polarized wave.
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Sub-wavelength tight-focusing of terahertz waves by polarization-independent high-numerical-aperture dielectric metalens.

TL;DR: To achieve high-NA and polarization-free operation, a polarization-independent dielectric metasurface with a sub-wavelength period of 0.4λ is proposed that has potential applications in THz imaging, spectroscopy, information processing, and communications, among others.
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Planar binary-phase lens for super-oscillatory optical hollow needles.

TL;DR: Numerical simulation reveals a good penetrability of the proposed optical hollow needle at an air-water interface, where the needle propagates through water with a doubled propagation distance and without loss of its super-oscillatory property.
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Synthesis of sub-diffraction quasi-non-diffracting beams by angular spectrum compression.

TL;DR: A method based on the idea of compressing a normalized angular spectrum is developed, which makes it possible and provides a practical tool for the design of a quasi-non-diffracting beam with super-oscillatory sub-wavelength transverse size.