Metasurface cylindrical vector light generators based on nanometer holes

Lv, Haijun; Lü, Xiaoqing; Han, Yuansheng; Mou, Zhen; Zhou, Changda; Wang, Shuyun; Teng, Shuyun

doi:10.1088/1367-2630/ab5f44

Cited by 74 publications

(30 citation statements)

References 28 publications

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“…Thus, metasurfaces have been proposed to control the phase and wavefront of light field, and various kinds of the metasurface elements including metalens [11][12][13], metasurface hologram [14,15], beam deflector [16,17], vortex generator [18][19][20] and vector light generator [21][22][23] have been advanced. The designed metasurface elements based on different working modes have different optical performance.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Metalenses Based on Three Kinds of Phase Compensation Techniques

Zhou

Mou

et al. 2021

Nanomaterials

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The phase delays introduced by anisotropic nanounits include propagation phase delay, resonant phase delay and geometric phase delay. Various phase devices can be formed based on the metasurfaces consisting of anisotropic nanounits and the phase devices of the same kind function have different performances because of different working modes. In this paper, metalenses and vortex metalenses are chosen as examples to compare the optical performance of metasurface phase devices based on three kinds of phase compensation techniques. We design separately three kinds of metalenses and vortex metalenses using the cross nanoholes, L-shaped nanohole and V-shaped nanoholes and simulate numerically their intensity and phase distributions. Additionally, the results show the differences among these elements in structure complexity, polarization dependence, working efficiency and phase uniformity. The comparison for three kinds of metalenses clearly shows the merits of different phase compensation techniques and this work must be helpful for expanding the practical applications of metasurfaces.

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Section: Introductionmentioning

confidence: 99%

Performance Analysis of Metalenses Based on Three Kinds of Phase Compensation Techniques

Zhou

Mou

et al. 2021

Nanomaterials

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“…MSs are often used to implement polarization transformations, including the formation of cylindrical vector beams (CVBs) with radial or azimuthal polarization [ 187 , 188 ]. Among the various types of MSs, the most common are metal and dielectric subwavelength gratings [ 189 , 190 ], including nanostructured fused-silica q-plates [ 191 , 192 ] and S-waveplates [ 193 ] as well as structures of subwavelength anisotropic primitives (meta-atoms) [ 194 , 195 , 196 ]. Each type of MSs has its advantages and disadvantages.…”

Section: Meta-axicons-flat Opticsmentioning

confidence: 99%

Modern Types of Axicons: New Functions and Applications

Хонина

Kazanskiy

Khorin

et al. 2021

Sensors

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Axicon is a versatile optical element for forming a zero-order Bessel beam, including high-power laser radiation schemes. Nevertheless, it has drawbacks such as the produced beam’s parameters being dependent on a particular element, the output beam’s intensity distribution being dependent on the quality of element manufacturing, and uneven axial intensity distribution. To address these issues, extensive research has been undertaken to develop nondiffracting beams using a variety of advanced techniques. We looked at four different and special approaches for creating nondiffracting beams in this article. Diffractive axicons, meta-axicons-flat optics, spatial light modulators, and photonic integrated circuit-based axicons are among these approaches. Lately, there has been noteworthy curiosity in reducing the thickness and weight of axicons by exploiting diffraction. Meta-axicons, which are ultrathin flat optical elements made up of metasurfaces built up of arrays of subwavelength optical antennas, are one way to address such needs. In addition, when compared to their traditional refractive and diffractive equivalents, meta-axicons have a number of distinguishing advantages, including aberration correction, active tunability, and semi-transparency. This paper is not intended to be a critique of any method. We have outlined the most recent advancements in this field and let readers determine which approach best meets their needs based on the ease of fabrication and utilization. Moreover, one section is devoted to applications of axicons utilized as sensors of optical properties of devices and elements as well as singular beams states and wavefront features.

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“…Figure 7 a shows the polarization distributions of this kind of beams, where φ 0 takes 0 ° and 90 ° and n takes 1 and 3. [ 121 ] One can intuitively observe the polarization distributions of this kind of beams have spatially cylindrical symmetry and LPVBs are also called as cylindrical vector beams.…”

Section: Polarization Of Singular Fieldsmentioning

confidence: 99%

“…a) Polarization distributions of LPVBs, [ 121 ] b) metasurfaces consisting of double nanoholes equivalent to polarizers and the generated LPVBs with the linear polarization light illumination, [ 53 ] c) metasurfaces consisting of nanoholes equivalent to quarter wave plates and the generated LPVBs with the circular polarization light illumination, [ 54 ] d) metasurface consisting of nanoholes equivalent to half wave plates and the generated LPVBs with the linear polarization light illumination, [ 122 ] e) metasurfaces consisting of nanoholes equivalent to half wave plates and the generated LPVBs with different q values under the linear polarization light illumination. [ 123 ] The black arrows and white arrows inserted in the lower left corner denote the input and output polarization states of light, respectively.…”

Section: Polarization Of Singular Fieldsmentioning

confidence: 99%

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Optical Singularity Built on Tiny Holes

Zhou

Mou

et al. 2021

Annalen der Physik

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Singular optics is a branch of modern optics, and it usually refers to various singularities including phase, polarization, and energy flux singularities. Lots of excellent researches in foundation and application fields relate to optical singularities. Nanotechnology enables the manipulation of optical singularities in nanometer scale. Metasurfaces consisting of nanoscatterers have aroused intensive interest in recent years because of the ultrathin structure and the powerful light manipulation ability. Optical singular fields generated by metasurfaces built on tiny holes attract much attention. The recent research progress about the optical singular fields in nanoscale is provided here and the physical mechanism of the formation of optical singularities including phase singularity, polarization singularity, and hybrid singularity are discovered in terms of tiny holes. The beneficial reference is provided here to investigate the related works, and the applications of optical singularities in nanometer scale are promoted.

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Metasurface cylindrical vector light generators based on nanometer holes

Cited by 74 publications

References 28 publications

Performance Analysis of Metalenses Based on Three Kinds of Phase Compensation Techniques

Performance Analysis of Metalenses Based on Three Kinds of Phase Compensation Techniques

Modern Types of Axicons: New Functions and Applications

Optical Singularity Built on Tiny Holes

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