Giant Goos–Hänchen shifts of waveguide coupled long-range surface plasmon resonance mode

You, Qi; Zhu, Jiaqi; Guo, Jun; Wu, Leiming; Dai, Xiaoyu; Xiang, Yuanjiang

doi:10.1088/1674-1056/27/8/087302

Cited by 12 publications

(8 citation statements)

References 36 publications

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“…As the thickness of the coupling layer decreases, the modes start to coupling and making the GH shifts larger. As the thickness of the coupling layer continues to decrease, the optimal coupling condition is lost and the GH shift decreases again, which is consistent with previous work [ 33 ]. On the other hand, the thickness of the insulator layer of the IMI structure also affects the GH shifts [ 47 ].…”

Section: Resultssupporting

confidence: 92%

“…Currently, large GH shifts have been obtained [ 30 , 31 , 32 ] by SPR, long-range surface plasmon resonance (LRSPR), etc. In the visible band, the coupling of two electromagnetic modes can further increase the GH shift and obtain a higher sensor sensitivity [ 33 ]. Therefore, the special structure may effectively improve the GH shifts.…”

Section: Introductionmentioning

confidence: 99%

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Mid-Infrared Sensor Based on Dirac Semimetal Coupling Structure

Zou

Liu

Song

2022

Sensors

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A multilayer structure based on Dirac semimetals is investigated, where long-range surface plasmon resonance (LRSPR) of a dielectric layer/Dirac semimetal/dielectric layer are coupled with surface plasmon polaritons (SPPs) on graphene to substantially improve the Goos–Hänchen (GH) shift of Dirac semimetals in the mid-infrared band. This has important implications for the study of mid-infrared sensors. We studied the reflection coefficient and phase of this multilayer structure using a generalized transport matrix. We established that subtle changes in the refractive index of the sensing medium and the Fermi energy of the Dirac semimetal significantly affected the GH shift. Our numerical simulations show that the sensitivity of the coupling structure is more than 2.7×107 λ/RIU, which can be used as a potential new sensor application. The novelty of this work is the design of a tunable, highly sensitive, and simple structured mid-infrared sensor that takes advantage of the excellent properties of Dirac semimetals.

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Mid-Infrared Sensor Based on Dirac Semimetal Coupling Structure

Zou

Liu

Song

2022

Sensors

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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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“…At the same time, in the incident plane, it transmits for a certain distance along the interface direction, and then returns to the optical dense medium [17]. You et al proposed a long-range surface plasmon resonance (SPR) mode, in which gold (Au) is the excitation layer of SPPs, so as to improve the GH shift [18]. The sliver (Ag) film layer of SPR can easily adjust the position of the minimum reflection and the maximum GH shift [19].…”

Section: Introductionmentioning

confidence: 99%

High-Sensitivity Goos-Hänchen Shifts Sensor Based on BlueP-TMDCs-Graphene Heterostructure

Han

Pan

et al. 2020

Sensors

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Surface plasmon resonance (SPR) with two-dimensional (2D) materials is proposed to enhance the sensitivity of sensors. A novel Goos–Hänchen (GH) shift sensing scheme based on blue phosphorene (BlueP)/transition metal dichalogenides (TMDCs) and graphene structure is proposed. The significantly enhanced GH shift is obtained by optimizing the layers of BlueP/TMDCs and graphene. The maximum GH shift of the hybrid structure of Ag-Indium tin oxide (ITO)-BlueP/WS2–graphene is −2361λ with BlueP/WS2 four layers and a graphene monolayer. Furthermore, the GH shift can be positive or negative depending on the layer number of BlueP/TMDCs and graphene. For sensing performance, the highest sensitivity of 2.767 × 107λ/RIU is realized, which is 5152.7 times higher than the traditional Ag-SPR structure, 2470.5 times of Ag-ITO, 2159.2 times of Ag-ITO-BlueP/WS2, and 688.9 times of Ag-ITO–graphene. Therefore, such configuration with GH shift can be used in various chemical, biomedical and optical sensing fields.

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Giant Goos–Hänchen shifts of waveguide coupled long-range surface plasmon resonance mode

Cited by 12 publications

References 36 publications

Mid-Infrared Sensor Based on Dirac Semimetal Coupling Structure

Mid-Infrared Sensor Based on Dirac Semimetal Coupling Structure

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

High-Sensitivity Goos-Hänchen Shifts Sensor Based on BlueP-TMDCs-Graphene Heterostructure

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