Enhancement and control of the Goos—Hänchen shift by nonlinear surface plasmon resonance in graphene

You, Qi; Jiang, Leyong; Dai, Xiaoyu; Xiang, Yuanjiang

doi:10.1088/1674-1056/27/9/094211

Cited by 12 publications

(5 citation statements)

References 46 publications

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“…The existence of the GH shift was confirmed by experiments in 1947 by Goos and Hänchen [1,2]. There has been a great deal of theoretical and experimental [3][4][5][6][7][8][9] research since the discovery and confirmation of the effect. Usually, the GH shift between two interfaces is very small, almost comparable to the wavelength, which makes it difficult to observe and measure experimentally.…”

Section: Introductionmentioning

confidence: 79%

Giant tunable Goos–Hänchen shifts based on surface plasmon resonance with Dirac semimetal films

You¹,

Li²,

Jiang

et al. 2019

J. Phys. D: Appl. Phys.

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Surface plasmon resonance (SPR) with bulk Dirac semimetals (BDS) has been proposed to enhance the Goos-Hänchen (GH) shift. It is found that a large positive and negative GH shift can be obtained by adjusting the thickness of the BDS film, and the GH shift is very sensitive to the Fermi level of the BDS film. By changing the Fermi level of the BDS film, we can get a controllable negative GH shift. The largest GH shift of the proposed configuration, as large as 361.4 times the incident wavelength, has been obtained. Compared with the traditional SPR structure, the GH shift is increased by nearly 13.4 times, which indicates that BDS is expected to replace the traditional SPR structure to excite the stronger SPR. Finally, the numerical simulation results further verify that the giant shift can be obtained by a finite width Gaussian beam in our proposed calculation. Based on this giant and controllable GH shift, it may have potential applications in tunable sensors, switches, filters, and other devices.

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Section: Introductionmentioning

confidence: 79%

Giant tunable Goos–Hänchen shifts based on surface plasmon resonance with Dirac semimetal films

You¹,

Li²,

Jiang

et al. 2019

J. Phys. D: Appl. Phys.

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“…[4][5][6] The GH and IF effects have attracted wide attention in physics and have been studied at different interfaces in recent decades, such as hybridized topological insulator, [7] metasurface, [8,9] photonic crystal, [10,11] temporally dispersion attenuation material, [12] graphene. [13][14][15][16][17][18][19] Specifically in these studies, GH and IF shifts were tuned by magnetic field and chemical potential, [7,[17][18][19] and often used as effective probes in precision metrology of material structural parameters since they were sensitive to material properties. [15,16] Weyl semimetal (WSM), an emerging topological material who takes non-mass Weyl fermions as quasi-particles, is also known as "three-dimensional graphene".…”

Section: Introductionmentioning

confidence: 99%

Goos–Hänchen and Imbert–Fedorov shifts in tiltedWeyl semimetals

et al. 2022

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We establish the beam models of Goos-Hänchen (GH) and Imbert-Fedorov (IF) effects in tilted Weyl semimetals (WSMs), and systematically study the influences of Weyl cone tilting and chemical potential on the GH and IF shifts at a certain photon energy 1.96 eV. It is found that the GH and IF shifts in tilted type-I and type-II WSMs both are almost symmetric about the Weyl cone tilting. Meanwhile, the GH and IF shifts in type-I WSMs almost do not change with the tilt degree of Weyl cones, while those in type-II WSMs are extremely dependent on tilt degree. These trends are mainly due to the nearly symmetric distribution of WSMs conductivities, where the conductivities keep stable in type-I WSMs and gradually decrease with tilt degree in type-II WSMs. By adjusting the chemical potential, the boundary between type-I and type-II WSMs widens, the dependence of the beam shifts on the tilt degree can be manipulated. Furthermore, by extending the relevant discussions to a wider frequency band, the peak fluctuation of GH shifts and the decrease of IF shifts occur gradually as the frequency increases, and the performance of beam shifts at photon energy 1.96 eV is equally suitable for other photon frequencies. The above findings provide a new reference for revisiting the beam shifts in tilted WSMs and determining the types of WSMs.

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“…Strikingly this approach allows complete electrostatic control [17,18]. Recently it has been shown that nonlinear surface plasmon resonance in graphene can provide rigorous enhancement and control over GH effect [19,20].…”

Section: Introductionmentioning

confidence: 99%

Goos-Hänchen Shifts in Gapped Graphene subject to External Fields

Mekkaoui¹,

Jellal²,

Bahlouli³

2020

Preprint

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We study Dirac fermions in gapped graphene that are subjected to a magnetic field and a potential barrier harmonically oscillating in time. The tunneling modes inside the gap and the associated Goos-Hnchen (GH) shifts are analytically investigated. We show that the GH shifts in transmission for the central band and the first two sidebands change sign at the Dirac points +l ω (l = 0, ±1). We also find that the GH shifts can be either negative or positive and becomes zero at transmission resonances.

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Enhancement and control of the Goos—Hänchen shift by nonlinear surface plasmon resonance in graphene

Cited by 12 publications

References 46 publications

Giant tunable Goos–Hänchen shifts based on surface plasmon resonance with Dirac semimetal films

Giant tunable Goos–Hänchen shifts based on surface plasmon resonance with Dirac semimetal films

Goos–Hänchen and Imbert–Fedorov shifts in tiltedWeyl semimetals

Goos-Hänchen Shifts in Gapped Graphene subject to External Fields

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