High-efficiency dielectric metasurfaces for simultaneously engineering polarization and wavefront

Yin, Zhiping; Chen, Fujia; Zhu, Lingling; Guo, Kai; Shen, Fei; Zhou, Qingfeng; Guo, Zhongyi

doi:10.1039/c8tc01669k

Cited by 26 publications

(19 citation statements)

References 33 publications

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“…To reduce ohmic losses in plasmonic metasurfaces and improve efficiency, dielectric designs 105,106 have been introduced to generate a desired vectorial optical eld. 107 The unit cell of the dielectric metasurface is schematically depicted in Fig. 4e.…”

Section: Simultaneous Control Of Multiple Properties Of Output Light mentioning

confidence: 99%

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Controlling the degrees of freedom in metasurface designs for multi-functional optical devices

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Section: Simultaneous Control Of Multiple Properties Of Output Light mentioning

confidence: 99%

“…(a-d) Reproduced with permission 104. (e and f) Reproduced with permission 107. (g and h) Reproduced with permission 109.…”

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confidence: 99%

Controlling the degrees of freedom in metasurface designs for multi-functional optical devices

et al. 2019

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“…3(a-c) have different deviations from 94.8 μm, 63.2 μm and 37.9 μm calculated theoretically by Eq. (6). It is because of the coupling effect among adjacent nanobricks and finite aperture of the metalens [38,39], such deviation will decrease as the mutual rotation angle θ increases or say the focal length decreases.…”

Section: Numerical Simulations Of a Zoom Metalensmentioning

confidence: 99%

“…By virtue of the capability of manipulating the electromagnetic fields, metasurfaces [1][2][3][4][5][6] are widely used to develop many new optical devices and optimize traditional optical devices. In particular, geometric metasurfaces (GEMSs) get extensive attraction due to its precise phase control ability.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable continuous-zoom metalens in visible band

et al. 2019

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Design of a conventional zoom lens is always challengeable because it requires not only sophisticated optical design strategy, but also complex and precise mechanical structures for lens adjustment. In this paper, we propose a continuous zoom lens consisting of two chiral geometric metasurfaces with dielectric nanobrick arrays sitting on a transparent substrate. The metalens can continuously vary the focal length by rotating either of the two metasurfaces along its optical axis without changing any other conditions. More importantly, because of the polarization dependence of the geometric metasurface, the positive and negative polarities are interchangeable in one identical metalens only by changing the handedness of the incident circularly polarized light, which can generate varyingfocal lengths ranging from − to + in principle. On account of its advantages of compactness, flexibility and easiness in design, the proposed zoom metalens can provide new perspectives for the development of continuous-zoom optical system and it can find applications in fields which require ultracompact and continuous-zoom imaging and reconfigurable beam wavefront steering.

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“…In the past few years, there have been rapid and significant developments in both theory and practical research about metasurfaces. Many fascinating phenomena have been discovered, such as anomalous reflection and refraction [1][2][3], metalenses [4][5][6], polarization manipulation [7][8][9], vortex beam generation [10][11][12], and absorbers [13]. Additionally, many ingenious bi-functional metasurfaces have been designed, which holds great promise for integrated optics.…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency and Broadband Near-Infrared Bi-Functional Metasurface Based on Rotary Different-Size Silicon Nanobricks

et al. 2019

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Several novel spin-dependent bi-functional metasurfaces consisting of different-sized rotary silicon nanobricks have been proposed and numerically investigated based on the Pancharatnam–Berry phase and structural phase simultaneously. Here, a transmission mechanism is strictly deduced, which can avoid crosstalk from the multiplexed bi-functional metasurface. Four kinds of high-efficiency bi-functional devices have been designed successfully at infrared wavelengths, including a spin-dependent bi-functional beam deflector, a spin-dependent bi-functional metalens, a bi-functional metasurface with spin-dependent focusing and deflection function, and a spin-dependent bi-functional vortex phase plate. All of the results demonstrate the superior performances of our designed devices. Our work opens up new doors toward building novel spin-dependent bi-functional metasurfaces, and promotes the development of bi-functional devices and spin-controlled photonics.

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High-efficiency dielectric metasurfaces for simultaneously engineering polarization and wavefront

Abstract: Emerging metasurfaces are capable of arbitrarily reshaping the incident light, including polarization and wavefront, thereby enabling highly compact optical devices, such as meta-deflectors, meta-waveplates, and meta-lenses.

Cited by 26 publications

References 33 publications

Controlling the degrees of freedom in metasurface designs for multi-functional optical devices

Controlling the degrees of freedom in metasurface designs for multi-functional optical devices

Reconfigurable continuous-zoom metalens in visible band

High-Efficiency and Broadband Near-Infrared Bi-Functional Metasurface Based on Rotary Different-Size Silicon Nanobricks

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