Optical Singularity Built on Tiny Holes

Zhou, Changda; Mou, Zhen; Lu, Peiyao; Teng, Shuyun

doi:10.1002/andp.202100147

Cited by 10 publications

(7 citation statements)

References 138 publications

(217 reference statements)

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“…[14][15][16][17][18][19][20] In comparison with the other methods, metasurface has natural advantages in miniaturization and integration of light field regulation, and it can cause spatially varying optical responses through the interaction between the light field and nanostructure instead of a spatial accumulation effect along an optical path. [21][22][23][24][25][26] Yang et al found that a high order plasmonic vortex generated by using multi-arm spiral nanoslits etched on metasurface carries a deuterogenic compound plasmonic vortex. [27] Zhou et al proposed a compound plasmonic vortex generator by using spiral nanoslits etched on metasurface to generate compound plasmonic vortices in active or passive modes.…”

Section: Introductionmentioning

confidence: 99%

Compound Vortex Metalens with Linearly Polarized Encryption

Zhou

Yue

et al. 2023

Annalen der Physik

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In view of the rapid development of nano‐fabrication technology and the wide application of composite vortex fields, a kind of compound vortex metalens with polarization encryption is proposed. The proposed compound vortex metalens can simultaneously generate compound vortex beams with double annular strengths, unequal topological charges, and specific polarization states in different radial regions, which have the characteristic of higher dimensional singularity. The compound vortex metalens consisting of rectangular nanoholes works under linearly polarized light illumination, and the topological charges of the generated compound vortex beam can be modulated through rotating nanoholes. Simulation results and theoretical analysis verify the reliability of polarization‐coded compound vortex beam metalens. The variation of polarized encrypted transmission field with the incident polarized angle shows the broader performance of polarization encryption compound vortex metalens. The multiple singularities and polarization encryption properties of the generated compound vortex beams combining with the integrated metasurface will be helpful for broadening the applications of singular beams.

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Section: Introductionmentioning

confidence: 99%

Compound Vortex Metalens with Linearly Polarized Encryption

Zhou

Yue

et al. 2023

Annalen der Physik

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“…Usually, one accelerated beam can be produced with the help of spatial light modulator (SLM), [2,6,11,12] coupling grating, [13] microcavity, [14] or lens system. [15] Siviloglou G A et al generated DOI: 10.1002/andp.202200153 the 1D and 2D Airy beams using the SLM. [2] Zhang P et al obtained nonparaxial Mathieu and Weber accelerating beams also using the SLM.…”

Section: Introductionmentioning

confidence: 99%

“…Metasurfaces consisting of subwavelength unit array can effectively control the light field on nanometer scale, [15,16] and they have also been applied in the design of the planer devices like metalens, [17,18] metafilter, [19,20] circular polarizer, [21] and metahologram. [22,23] Metasurfaces are also utilized to generate accelerated beams.…”

Section: Introductionmentioning

confidence: 99%

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Direction‐Reversible Accelerated Beam Generation Based on Metasurfaces

Zhou

et al. 2022

Annalen der Physik

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Accelerated beams have many applications because of their remarkable ability to propagate along curved trajectories. An accelerated beam with a non‐monotonic trajectory provides more beam deformability and trajectory concealment. This paper proposes direction‐reversible accelerated beam generation on nanometer scale based on metasurfaces. The non‐monotonic trajectory of the beam can be obtained by designing the geometric metasurface, while the curvature of the light trajectory can be adjusted by changing the angles of rectangular nanoholes. A theoretical expression for the modified wavefront of the proposed beam is deduced, and simulation and experiment results confirm the performance of the metasurface for generating a direction‐reversible accelerated beam. Discussions on the self‐healing of the accelerated beam and the influence of incident conditions on the curve trajectory show the trajectory controllability of the accelerated beam during the propagation. This work paves one way for tailoring the accelerated fields with complex trajectories, and it is helpful to expand the applications of accelerated beams.

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“…These elements are obviously difficult to integrate. Metasurface consisting of nanounits offers great potential for generating polarized beams, which is an efficient way to manipulate vector beams [24,25]. Due to the ultra-thin thickness, simple production, easy integration and light manipulation in nanometer scale, metasurfaces have been widely used in the design of optical elements, such as circular polarization analyzers [26,27], polarization converters [28,29], optical vortices [30,31].…”

Section: Introductionmentioning

confidence: 99%

Versatile Integrated Polarizers based on Geometric Metasurfaces

Yue¹,

Xu²,

Lu³

et al. 2022

Preprint

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We propose versatile integrated polarizers based on geometric metasurfaces. Metasurface polarizer consists of L-shaped hole array etched on a silver film and it can generate simultaneously several polarization states including the linear polarization, circular polarization, elliptical polarization, or even hybrid polarization. Meanwhile, the combination of output polarization states changes with the illumination polarization type. The theoretical analysis provides the detail explanation for the generation of the integrated polarization states. The well-designed metasurface polarizers may generate more complex polarization modes including vector beams and vector vortex beams. The theoretical and simulated results confirm the polarization performance of the proposed integrated metasurface polarizers. The compact design of metasurface polarizers and the controllable generation of versatile polarization combinations are benefit to the applications of polarization light in optical imaging, biomedical sensing and material processing.

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Optical Singularity Built on Tiny Holes

Cited by 10 publications

References 138 publications

Compound Vortex Metalens with Linearly Polarized Encryption

Compound Vortex Metalens with Linearly Polarized Encryption

Direction‐Reversible Accelerated Beam Generation Based on Metasurfaces

Versatile Integrated Polarizers based on Geometric Metasurfaces

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