Generation of regular optical vortex arrays using double gratings

Sun, Haibin; Zhang, Xinyu; Sun, Ping

doi:10.1007/s11801-021-0047-0

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2022

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“…by interferometry [22][23][24][25], polarization method [26], phase grating [27,28], spatial light modulators (SLMs) [29] and so on. Unfortunately, these methods are all hard to generate both high-density and fine-scale VA.…”

Section: Introductionmentioning

confidence: 99%

Generation and evolution of vortex array with variable-ratio lateral-shearing interferometry

yong

Zhang

2022

J. Opt.

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Different from the method by plane-wave interference, here an efficient approach is proposed to generate optical vortex array (VA) based on lateral-shearing interferometer (LSI), in which the evolution from light spot array to VA can be observed by continuously variable shear ratio in a certain range. VAs with topological charge 2 and 1 are simulated by software GLAD and proved to be effectiveness through optical experiment. Theoretical analysis and experimental results show that when the shear ratio approaches to zero, we can stably obtain a vortex array with high density and variable topological charge.

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