Chip-integrated metasurface for versatile and multi-wavelength control of light couplings with independent phase and arbitrary polarization

Meng, Yuan; Hu, Futai; Liu, Zhoutian; Xie, Peng; Shen, Yijie; Xiao, Qirong; Fu, Xing; Bae, Sang‐Hoon; Gong, Mali

doi:10.1364/oe.27.016425

Cited by 38 publications

(33 citation statements)

References 47 publications

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“…Here, we focused on controlling the THz wavefront at 0.9 THz. Considering the unit structure's two-fold (C2) rotational symmetry [52][53][54], the dynamic phase E y,y and the amplitude response T y,y can be obtained by exchanging the x and y axes in the inset of Figure 2, which corresponds to:…”

Section: Simulation Resultsmentioning

confidence: 99%

Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging

Zhou

Zhuang

et al. 2021

Nanomaterials

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We present a terahertz spherical aberration-corrected metalens that uses the dynamic phase to achieve polarization multiplexed imaging. The designed metalens has polarization–dependent imaging efficiencies and polarization extinction ratios that exceed 50% and 10:1, respectively. Furthermore, opposite gradient phases can be applied to orthogonal polarizations to shift the imaging of the two polarized sources in the longitudinal and transverse directions. Indeed, we find that the metalens has a smaller depth-of-focus than a traditional metalens when imaging point sources with limited objective lengths. These results provide a new approach for achieving multifunctional beam steering, tomographic imaging and chiroptical detection.

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Section: Simulation Resultsmentioning

confidence: 99%

Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging

Zhou

Zhuang

et al. 2021

Nanomaterials

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“…Metal-dielectric metasurfaces find common use in optical sensing and communication applications since they allow to shape optical spectra, wave-fronts and polarizations [1][2][3][4][5][6] . They can also be used to increase the light-matter interaction for strong absorption/emission [7][8][9][10] or non-linear effects 4,[11][12][13] , to create beam splitters 14,15 , selective reflectors 16,17 , holograms [18][19][20] , polarizers [21][22][23] and for various other applications such as chiral photonic structures and chemical sensors [24][25][26] .…”

Section: Design Of Cmos-compatible Metal-insulator-metal Metasurfacesmentioning

confidence: 99%

Design of CMOS-compatible metal–insulator–metal metasurfaces via extended equivalent-circuit analysis

Dorodnyy

Koepfli

Lochbaum

et al. 2020

Sci Rep

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Photonic metasurfaces compatible with large-scale production such as CMOS are of importance because they promise cointegration of electronics with photonics for detection, communication and sensing. The main challenges on the way of designing such metasurfaces are: (1) large variety of possible geometrical shapes of metasurface elements that makes finding the most appropriate shape difficult; (2) poor compatibility of available electronic layer stacks with photonics. In this paper we show how to address both of these challenges utilizing extended equivalent-circuit analysis. In a first step we classify the behavior of different metasurfaces using the equivalent circuit. We discover that metasurfaces that use inverted-dipole resonator type exhibit higher tolerance to dielectric spacer thickness, higher angular stability and have similar resonance quality-factor as other types. In the second step we utilize the equivalent-circuit scheme to efficiently optimize the parameters of inverted-dipole based metasurfaces for a layer stack such as given in a CMOS process. Finally, as an example we demonstrate how an inverted-cross structure can be adapted to a commercial 110 nm CMOS process with Al metal layers. We measured peak absorption above 90% at center wavelength around 4 µm with quality factor of approximately 5 and angular stability larger than 60°.

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“…Various planar optical devices such as filters [20,21] , lenses [22][23][24][25] , polarizers [26,27] and absorbers [28,29] have been implemented by diverse reflective or transmissive metasurfaces, featuring high optical performance as well as ultracompact footprint. Apart from engineering light in free space, metasurfaces have also demonstrated the ability to manipulate guided light, primarily focusing on the near-infrared spectral range for communication applications [30][31][32][33] . Compared to conventional couplers such as prisms and gratings, metasurface couplers offer a unique feature of unidirectional in-coupling that can be controlled by the polarization state of incident light.…”

Section: Introductionmentioning

confidence: 99%

42.4: Compact Stereo Waveguide Display Using a Polarization‐Multiplexed In‐coupling Metagrating

Liu

Zhang

Huang

et al. 2021

Symp Digest of Tech Papers

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Three‐dimensional (3D) vision in augmented reality (AR) displays can enable highly immersive and realistic viewer experience, hence attracts much attention. Most current approaches create 3D visions by projecting stereoscopic images to different eyes using two separate projection systems, which are inevitably bulky for wearable devices. Here, we propose a compact stereo waveguide AR display system using a single piece of thin flat glass integrated with a polarization‐multiplexed metagrating in‐coupler and two diffractive grating out‐couplers. Incident light of opposite circular polarization states carrying stereoscopic images are first steered by the metagrating to opposite propagation directions in the flat glass waveguide, subsequently extracted by the diffractive gratings and finally received by different eyes, forming 3D stereo vision. Experimentally we fabricated a display prototype and demonstrated independent projection of two polarization‐multiplexed stereoscopic images. This work paves a novel path towards the implementation of high‐performance stereo displays with compact size, light weight, and multi‐color compatibility.

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Chip-integrated metasurface for versatile and multi-wavelength control of light couplings with independent phase and arbitrary polarization

Cited by 38 publications

References 47 publications

Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging

Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging

Design of CMOS-compatible metal–insulator–metal metasurfaces via extended equivalent-circuit analysis

42.4: Compact Stereo Waveguide Display Using a Polarization‐Multiplexed In‐coupling Metagrating

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