Abstract
Abstract In recent years, the spin Hall effect of light (SHE), also called the photonic spin Hall effect has received extensive research attention, and a series of interesting results have been achieved. This phenomenon has potential applications in nanooptics, quantum information, and optoelectronic devices. In contrast to the pure photon SHE, the photonic spin Hall effect in the surface plasmonic platform exhibits unique properties due to the surface plasmon resonance effect of noble metal material and establishes the connection between photons and electrons. Therefore, the SHE of light in a surface plasmonic platform is expected to be applied to integrated optical devices to create a novel means of developing communication devices. In this paper, we review the progress on the SHE of light based on the plasmonic platform in recent years, and we discuss the future directions of research and prospects for its applications.
Highlights
The concept of the spin Hall effect (SHE) was first established about the spin-dependent separation of electrons in a Research on the spin Hall effect of light (SHE) of light predates the development of this concept
By comparing the spin separation of the transverse magnetic (TM) and transverse electric (TE) modes, the results show that the photonic spin Hall effect (PSHE) shift of the TM mode that can excite the surface plasmon resonance (SPR) effect increases significantly, which indicates the enhancement effect of the SPR effect on SHE
The results show that because SPR is only excited by TM polarized light, there are large transverse beam shifts in TM polarized light, which is the enhancement effect of PSHE with the SPR effect
Summary
The concept of the spin Hall effect (SHE) was first established about the spin-dependent separation of electrons in a. By combining the SPR effect with SHE, the lateral shift in photon spin can be amplified, and it can be manipulated at the nanometer scale by designing a surface plasmon platform [24, 25]. This is mainly due to the special photoelectric properties generated by the surface plasmon polaritons (SPP) of metal nanostructures [26]. With the help of composite surface plasmon platform by introducing semiconductor materials, the combination of photon and electron SHE can be realized, so as to achieve the purpose of controlling electron SHE, which is of great significance to the development of new optoelectronic devices [40, 41]
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