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Spin-orbit coupling simulation device

A spin-orbit coupling and simulating device technology, applied in the field of physical optics, can solve the problems of high cost, complex experimental environment, and difficult operation, and achieve the effect of reducing the experimental cost.

Active Publication Date: 2018-08-24
FOSHAN UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In the past, cold atomic gases were generally used to simulate spin-orbit coupling nonlinear problems, but this method requires high cost, complex experimental environment, and difficult operation

Method used

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Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1, reference figure 1 , a spin-orbit coupling analog device, including a waveguide body, wherein the waveguide body is made of commonly used silicon dioxide material, and its nonlinear parameter is 8W -1 / km, the body is stud-shaped, wherein the pitch a of the body is The diameter d of the main body is 0.5mm, where 0.375≤ω≤0.75, further optimized, the length b of the main body is 0.25m.

[0021] As an optimization, the ω is 0.5.

[0022] In experimenting with this device, a standardized spatiotemporal nonlinear wave with a wavelength of 1.55 μm and a constant group velocity dispersion of 40 ps 2 / km, and input it into the body, wherein, the propagation dynamic equation of the standardized space-time nonlinear wave in the body is determined by the two-dimensional nonlinear Schrödinger equation, and in the rotating coordinate system, the equation is as follows:

[0023]

[0024] In the equation, z is the optical path of the normalized space-time nonlinea...

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Abstract

The invention discloses a spin-orbit coupling simulation device, which is characterized by comprising a waveguide body in a stud shape. The pitch of the body is 2pi / omega m, the diameter of the body is 0.5 mm, and 0.375< / =omega< / =0.75. By using the simulation device of the invention, Rashba spin-orbit coupling effects can be simulated successful, the experiment cost is reduced, and the simulationdevice can be used in a photoelectric physics experiment.

Description

technical field [0001] The invention relates to the technical field of physical optics, in particular to a spin-orbit coupling analog device. Background technique [0002] The Rashba spin-orbit coupling effect interaction mechanism was first introduced by Rashba. The Rashba spin-orbit coupling originated from structural inversion asymmetry, and the non-centrosymmetric nature of the material structure will lead to energy band tilting. For the specific description of the Rashba spin-orbit coupling effect, please refer to the literature: Yang Jun, Dai Binfei, Li Xia. Research on the spin-orbit coupling effect and its application [J]. University Physics, 2011, (8): 9-12. [0003] In the past, cold atomic gases were generally used to simulate spin-orbit coupling nonlinear problems, but this method required high cost, complicated experimental environment, and difficult operation. Therefore, how to simulate the spin-orbit coupling nonlinear problem with optical devices with low co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/22
CPCG09B23/22
Inventor 黎永耀黄浩吕琳黄纯青
Owner FOSHAN UNIVERSITY