Optical reflective metasurfaces based on mirror-coupled slot antennas

Ebel, Sven; Deng, Yadong; Hentschel, Mario; Meng, Chao; Sande, Sören im; Gießen, Harald; Ding, Fei; Bozhevolnyi, Sergey I.

doi:10.1117/1.apn.2.1.016005

Cited by 4 publications

(3 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Discussionmentioning

confidence: 99%

“…These advantages are helpful for promoting the development of a miniature SPI system using free-space optical components 12,31,32,59 as well as chip-scale integration with silicon photonic circuits 64 or metasurfaces. [65][66][67][68][69][70][71][72] Fig. 13 Acceleration strategy of the DIP-SP processing the images of all spectral bands one by one.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Deep image prior plus sparsity prior: toward single-shot full-Stokes spectropolarimetric imaging with a multiple-order retarder

Han

et al. 2023

Adv. Photon. Nexus

View full text Add to dashboard Cite

Compressive full-Stokes spectropolarimetric imaging (SPI), integrating passive polarization modulator (PM) into general imaging spectrometer, is powerful enough to capture high-dimensional information via incomplete measurement; a reconstruction algorithm is needed to recover 3D data cube (x , y , and λ) for each Stokes parameter. However, existing PMs usually consist of complex elements and enslave to accurate polarization calibration, current algorithms suffer from poor imaging quality and are subject to noise perturbation. In this work, we present a single multiple-order retarder followed a polarizer to implement passive spectropolarimetric modulation. After building a unified forward imaging model for SPI, we propose a deep image prior plus sparsity prior algorithm for high-quality reconstruction. The method based on untrained network does not need training data or accurate polarization calibration and can simultaneously reconstruct the 3D data cube and achieve self-calibration. Furthermore, we integrate the simplest PM into our miniature snapshot imaging spectrometer to form a single-shot SPI prototype. Both simulations and experiments verify the feasibility and outperformance of our SPI scheme. It provides a paradigm that allows general spectral imaging systems to become passive full-Stokes SPI systems by integrating the simplest PM without changing their intrinsic mechanism.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Deep image prior plus sparsity prior: toward single-shot full-Stokes spectropolarimetric imaging with a multiple-order retarder

Han

et al. 2023

Adv. Photon. Nexus

View full text Add to dashboard Cite

show abstract

“…Currently, the unique role of metasurfaces as an efficient channel-controlling system is indisputable. Metasurfaces, two-dimensional counterparts of metamaterials provide novel efficient and versatile platforms to control electromagnetic waves [1][2][3]. They offer a means to selectively manipulate the direction of wave propagation and polarization, mold the wavefront and generate surface waves.…”

Section: Introductionmentioning

confidence: 99%

Highly dispersive transmission conditions for a conductive rods-based ultrathin bilayer metastructure

Abrahamyan,

Ohanyan,

Hambaryan

et al. 2024

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

We experimentally demonstrate that the transmission of microwave electromagnetic fields through a bilayer metasurface (BMS) composed of thin conductive rods can abruptly change in a narrow frequency range. A theoretical analysis based on the coupled oscillator model is performed to reveal the physical mechanism behind the frequency-dependent properties of such a structure. Two conditions primarily facilitate the observed high dispersion in the BMS. The first one is the resonant interaction between the incident microwaves and rods, leading to the formation of surface standing waves. These waves with radial electric fields enable the coupling of the near-field of rods in structural layers. The second condition is the complex value of the coupling coefficient between rods of different owing to the delayed interaction process between them. The electromagnetic response here can be effectively controlled by varying the distance between layers and the dielectric properties of the interlayer medium.

show abstract

Inverse design of polarization-independent structural color based on a coding metasurface via a bidirectional artificial neural network

Zuo,

Ni,

Zhou

et al. 2024

J. Opt. Soc. Am. B

View full text Add to dashboard Cite

A polarization-independent structural color based on a coding metasurface is reverse designed via a bidirectional neural network. A forward prediction network from coding metasurface structures to colors is constructed by introducing a bidirectional long short-term memory (Bi-LSTM) model. Based on this model, a bidirectional neural network training method is adopted to achieve reverse design from the target color to the optimal structure of the coding metasurface. The results show that the method can achieve 91% accuracy for forward prediction of color and 92% accuracy for inverse design of the structure. In addition, the coding metasurface structure has quadruple rotational symmetry, which realizes that the structural color is independent of the polarization of the incident light. This study provides a novel polarization-independent structural color design scheme, providing a new path for the application and development of structural colors.

show abstract

Optical reflective metasurfaces based on mirror-coupled slot antennas

Cited by 4 publications

References 41 publications

Deep image prior plus sparsity prior: toward single-shot full-Stokes spectropolarimetric imaging with a multiple-order retarder

Deep image prior plus sparsity prior: toward single-shot full-Stokes spectropolarimetric imaging with a multiple-order retarder

Highly dispersive transmission conditions for a conductive rods-based ultrathin bilayer metastructure

Inverse design of polarization-independent structural color based on a coding metasurface via a bidirectional artificial neural network

Contact Info

Product

Resources

About