Theoretical research on enhancement and adjustment of Spin Hall effect of light based on InSb

Wang, Pengxiang; Wan, Bao-Fei; Peng, Hongmei; Ma, Yu; Zhang, Haifeng; Zhang, Dan

doi:10.1007/s11082-021-02777-3

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…[29] In particular, its permittivity can be dynamically tuned by varying the temperature. [30][31][32] Therefore, InSb is a good candidate to construct the LRSPR configuration in the terahertz region, and the photonic SHE of this InSb-based structure could be flexibly controlled by the temperature.…”

Section: Introductionmentioning

confidence: 99%

Photonic spin Hall effect and terahertz gas sensor via InSb-supported long-range surface plasmon resonance

et al. 2022

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The photonic spin Hall effect (SHE), featured by a spin-dependent transverse shift of left- and right-handed circularly polarized light, holds great potential for applications in optical sensors, precise metrology and nanophotonic devices. In this paper, we present the significant enhancement of photonic SHE in the terahertz range by considering the InSb-supported long-range surface plasmon resonance (LRSPR) effect. The influences of the InSb/ENZ layer thickness and temperature on the photonic SHE were investigated. With the optimal structural parameters and temperature, the maximal spin shift of the horizontal polarization light can reach up to 2.68 mm. Moreover, the spin shift is very sensitive to the refractive index change of gas, and thus a terahertz gas sensing device with a superior intensity sensitivity of 2.5 × 105 μm/RIU is proposed. These findings provide an effective method to enhance the photonic SHE in the terahertz range and therefore offer the opportunity for developing the terahertz optical sensors based on photonic SHE.

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Section: Introductionmentioning

confidence: 99%

Photonic spin Hall effect and terahertz gas sensor via InSb-supported long-range surface plasmon resonance

et al. 2022

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“…[24] Previous reports have investigated the enhancement and adjustment of PSHE in THz range for InSb-based structure, therefore, InSb can be considered as a good candidate to explore the PSHE in THz range. [25] Here, by replacing the metal film in conventional metal-DBR structure with a semiconductor of InSb, a new type of InSb-DBR system is constructed. Moreover, the permittivity of InSb can be dynamically modulated by temperature, [26] which provides a new degree of freedom to manipulate the THz OTS and also PSHE behavior of InSb-DBR structure.…”

Section: Introductionmentioning

confidence: 99%

Enhancing terahertz photonic spin Hall effect via optical Tamm state and the sensing application

Cheng¹,

Xu²,

Xiang³

et al. 2022

Chinese Phys. B

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The photonic spin Hall effect (PSHE), characterized by two splitting beams with opposite spins, has great potential for applications in nano-photonic devices, optical sensing fields, and precision metrology. In this contribution, we presented the significant enhancement of terahertz (THz) PSHE by taking advantage of the optical Tamm state (OTS) in InSb-distributed Bragg reflector (DBR) structure. The spin shift of reflected light can be dynamically tuned by the structural parameters (e.g. the thickness) of InSb-DBR structure as well as the temperature, and the maximum spin shift for a horizontally polarized incident beam at 1.1 THz can reach up to 11.15 mm. Moreover, we proposed a THz gas sensing device based on the enhanced PSHE via the strong excitation of OTS for InSb-DBR structure with a superior intensity sensitivity of 5.873×104 mm/RIU and good stability. This sensor exhibits two orders of magnitude improvement compared with the similar PSHE sensor based on InSb-supported THz long-range surface plasmon resonance. These finds may provide an alternative way for the enhanced PSHE and offer the opportunity for developing new optical sensing devices.

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Spin Hall effect of light in anisotropic gyroelectric or gyromagnetic metamaterials

Hosseini

Zamani

Golshan

2022

Journal of Magnetism and Magnetic Materials

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Theoretical research on enhancement and adjustment of Spin Hall effect of light based on InSb

Cited by 4 publications

References 25 publications

Photonic spin Hall effect and terahertz gas sensor via InSb-supported long-range surface plasmon resonance

Photonic spin Hall effect and terahertz gas sensor via InSb-supported long-range surface plasmon resonance

Enhancing terahertz photonic spin Hall effect via optical Tamm state and the sensing application

Spin Hall effect of light in anisotropic gyroelectric or gyromagnetic metamaterials

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