首页|Performance analysis of single-focus phase singularity based on elliptical reflective annulus quadrangle-element coded spiral zone plates

Performance analysis of single-focus phase singularity based on elliptical reflective annulus quadrangle-element coded spiral zone plates

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Optical vortices generated by the conventional vortex lens are usually disturbed by the undesired higher-order foci,which may lead to additional artifacts and thus degrade the contrast sensitivity.In this work,we propose an efficient methodology to combine the merit of elliptical reflective zone plates(ERZPs)and the advantage of spiral zone plates(SZPs)in establishing a specific single optical element,termed elliptical reflective annulus quadrangle-element coded spiral zone plates(ERAQSZPs)to generate single-focus phase singularity.Differing from the abrupt reflectance of the ERZPs,a series of randomly distributed nanometer apertures are adopted to realize the sinusoidal reflectance.Typically,according to our physical design,the ERAQSZPs are fabricated on a bulk substrate;therefore,the new idea can significantly reduce the difficulty in the fabrication process.Based on the Kirchhoff diffraction theory and convolution theorem,the focusing performance of ERAQSZPs is calculated.The results reveal that apart from the capability of generating optical vortices,ERAQSZPs can also integrate the function of focusing,energy selection,higher-order foci elimination,as well as high spectral resolution together.In addition,the focusing properties can be further improved by appropriately adjusting the parameters,such as zone number and the size of the consisted primitives.These findings are expected to direct a new direction toward improving the performance of optical capture,x-ray fluorescence spectra,and forbidden transition.

optical vortexsingle-focusspiral zone platetopological charges

臧华平、王宝珍、郑程龙、魏来、范全平、王少义、杨祖华、周维民、曹磊峰、郭海中

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Key Laboratory of Material Physics,Ministry of Education,School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450052,China

National Key Laboratory for Laser Fusion,Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang 621900,China

School of Engineering Physics,Shenzhen Technology University,Shenzhen 518118,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaProgram of Science and Technology on Plasma Physics Laboratory,China Academy of Engineering PhysicsNational Natural Science Foundation,Youth Fund

1217435012275253122752506142A0420010712105268

2024

10.1088/1674-1056/acde4f

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(1)
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