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公开(公告)号：US20190339417A1
公开(公告)日：2019-11-07
申请号：US16474931
申请日：2018-04-13
Applicant: Sun Yat-Sen University
Inventor： Jianwen Dong , Zhibin Fan , Yujie Chen , Zengkai Shao , Siyuan Yu
Abstract: A method is disclosed of fabricating all-dielectric flat lens with low refractive index comprising: selecting dielectric substrate material and lens structure material; determining incident wavelength; calculating phase modulation corresponding to each pillar unit; periodically sampling circular area of dielectric substrate with radius to obtain plurality of sampling points; calculating phase modulation required at position each sampling point; obtaining pillar corresponding to each sampling point; arranging different dielectric pillars with low refractive index and same thickness are arranged on dielectric substrate, thereby obtaining all dielectric flat lens with low refractive index. Also disclosed is method of fabricating all-dielectric flat lens with low refractive index that fabricates plane divergent lens with high transmission in wavelength range of visible light, and providing all-dielectric flat lens with low refractive index to improve transmission in visible light region through using dielectric with low refractive index to replace metal and dielectric with high refractive index.
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公开(公告)号：US11454739B2
公开(公告)日：2022-09-27
申请号：US16474931
申请日：2018-04-13
Applicant: Sun Yat-Sen University
Inventor： Jianwen Dong , Zhibin Fan , Yujie Chen , Zengkai Shao , Siyuan Yu
Abstract: A method is disclosed of fabricating all-dielectric flat lens with low refractive index comprising: selecting dielectric substrate material and lens structure material; determining incident wavelength; calculating phase modulation corresponding to each pillar unit; periodically sampling circular area of dielectric substrate with radius to obtain plurality of sampling points; calculating phase modulation required at position of each sampling point; obtaining pillar corresponding to each sampling point; arranging different dielectric pillars with low refractive index and same thickness are arranged on dielectric substrate, thereby obtaining all dielectric flat lens with low refractive index. Also disclosed is method of fabricating all-dielectric flat lens with low refractive index that fabricates plane divergent lens with high transmission in wavelength range of visible light, and providing all-dielectric flat lens with low refractive index to improve transmission in visible light region through using dielectric with low refractive index to replace metal and dielectric with high refractive index.
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公开(公告)号：US10962409B2
公开(公告)日：2021-03-30
申请号：US16613804
申请日：2018-04-23
Applicant: SUN YAT-SEN UNIVERSITY
Inventor： Yujie Chen , Yuanhui Wen , Ioannis Chremmos , Siyuan Yu
Abstract: The invention discloses a method and system for measuring orbital angular momentum modes of photons based on spiral transformation. A phase plate located in an input plane transforms the incident beam along a spiral path in the input plane into a straight line in an output plane and a phase plate located in the output plane compensate the phase accumulated when the beam propagates from the input plane to the output plane during the above transformation process, thereby realizing that the orbital angular momentum modes of photons to be measured in the input plane are transformed into plane wave modes with specific tilted wavefronts in the output plane. The plane wave modes with different tilted wavefronts can be focused on different positions on the focal plane and thus realize one-to-one mapping and detection between orbital angular momentum modes of photons and spatial locations.
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