Giant photonic spin Hall effect near the Dirac points

Xu, Wenhao; Yang, Qiang; Ye, Guangzhou; Wu, Weijie; Zhang, Wenshuai; Luo, Hailu; Wen, Shuangchun

doi:10.1103/physreva.101.023826

Cited by 29 publications

(6 citation statements)

References 40 publications

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“…And the special topological photonic states can be achieved through the Dirac point. In addition, a strong photonic spin Hall effect and giant nonspecular effect appear near the Dirac point when a Gaussian beam impinges on the interface of a photonic Dirac metamaterial [36,37]. However, the Gaussian beams are axial symmetry beams.…”

Section: Introductionmentioning

confidence: 99%

Goos–Hänchen and Imbert–Fedorov shifts of the Airy beam in dirac metamaterials

2023

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We theoretically derive the expression for the Goos-Hänchen(GH) and Imbert-Fedorov(IF) shifts of the Airy beam in Dirac metamaterial. In this work, the large GH and IF shifts can be found when the Airy beam is reflected near the Dirac and Brewster angles. Compared to the Gaussian beam, the GH shifts of the Airy beam are more obvious in the vicinity of the Brewster angle. Interestingly, it is found that the ability to produce an Airy vortex beam at the Dirac point. In addition, the magnitude and the direction of the GH shifts can be controlled by the rotation angles of the Airy beam. We take advantage of this property to design a reflective optical switch based on the rotation angle-controlled GH shifts of the Dirac metamaterial. Our solutions provide the possibility to implement light-tuned optical switches. Moreover, our model can also be used to describe the GH and IF shifts generated by novel beams in other similar photonic systems

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Section: Introductionmentioning

confidence: 99%

Goos–Hänchen and Imbert–Fedorov shifts of the Airy beam in dirac metamaterials

2023

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“…at an air-glass interface 12 . Following this, PSHE investigation has been carried out in chiral materials 13 , metallic thin films 14 , topological materials 15 , two-dimensional atomic crystals 16 , metamaterials 17 and, Photonic crystals (PhC) 18 , etc. Here, the major emphasis is to enhance the PSHE, which has been investigated considering various nanophotonic techniques such as Brewster angle 19 , Surface Plasmon Resonance (SPR) [20][21][22] , optical pumping 23 and, lossy mode resonance (LMR) 24 , etc .…”

Section: Introductionmentioning

confidence: 99%

Nanophotonic Resonator Assisted Photonic Spin Hall Enhancement for Sensing Application

Goyal

Divyanshu

Massoud

2023

Preprint

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This manuscript presents a dielectric resonator structure with altered dispersion characteristics to enhance the photonic spin hall effect (PSHE). The structural parameters are optimized to enhance the PSHE at 632.8 nm operating wavelength. The thickness-dependent angular dispersion analysis is carried out to optimize the structure and obtain the exceptional points. The PSHE-induced spin splitting shows a high sensitivity to the optical thickness of the defect layer. This gives a maximum PSHE-based transverse displacement (PSHE-TD) of around 56.66 times the operating wavelength at an incidence angle of 61.68°. Moreover, the structure’s capability as a PSHE-based refractive index sensor is also evaluated. The analytical results demonstrate an average sensitivity of around 33,720 μm/RIU. The structure exhibits around five times higher PSHE-TD and approximately 150% improvement in sensitivity than the recently reported values in lossy mode resonance structures. Due to the purely dielectric material-assisted PhC resonator configurations and significantly higher PSHE-TD, the development of low-cost PSHE-based devices for commercial applications is envisaged.

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“…Many interesting phenomena are associated with the SOI, such as the spin-momentum locking [3]- [5], and photonic Skyrmions [6], [7]. The SOI can find various applications in metamaterials and metasurfaces, such as giant photonic spin Hall effect [8]- [14], optical differential operations [15], [16], and all-optical image edge detection [17]- [19]. Among them, Luo et al have done a series of interesting research works.…”

Section: Introductionmentioning

confidence: 99%

“…For example, they have proposed the first unified description of spin Hall effect of light by the spin redirection and Pancharatnam-Berry phases, and directly observed giant photonic spin Hall effect in a dielectricbased metamaterial [11]. And then, with the spin-orbit interaction of light in the photonic Dirac metacrystal, they found a giant photonic spin Hall effect near the Dirac points in 2020 [14]. Meanwhile, they have reported a full optical differentiator at a simple optical interface, and the optical differential operation is independent of the wavelength [15].…”

Section: Introductionmentioning

confidence: 99%

Nonlinearity-Tuned Optical Spin-Orbit Interaction of Graphene-Wrapped Nanoparticles

Sun

Gao

et al. 2022

IEEE Photonics J.

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Nonlinear control of light-matter interaction plays an important role in various optical phenomena, including spin-orbit interaction of light. In this paper, we demonstrate that the spinorbit interaction of graphene-wrapped nanoparticles can be tuned by the input intensity of light. Typical optical bistable responses are observed in the scattering efficiency and the local electric fields. In the optical bistable regime, the strength of spin-orbit interaction in the near-field is significantly tuned in the switching-up and switching-down branches. The tunability of spin-orbit interaction enables promising nonlinear control schemes in nanophotonic devices.

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Giant photonic spin Hall effect near the Dirac points

Cited by 29 publications

References 40 publications

Goos–Hänchen and Imbert–Fedorov shifts of the Airy beam in dirac metamaterials

Goos–Hänchen and Imbert–Fedorov shifts of the Airy beam in dirac metamaterials

Nanophotonic Resonator Assisted Photonic Spin Hall Enhancement for Sensing Application

Nonlinearity-Tuned Optical Spin-Orbit Interaction of Graphene-Wrapped Nanoparticles

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