Method and system for probing chirality parameter based on photonic spin hall shift

A system for probing a chirality parameter based on a photonic spin Hall shift, comprising:

• an acquisition module, configured to acquire a permittivity, a permeability, and a particle radius of a chiral nanoparticle to be probed;
• a correspondence mapping acquisition module, configured to:
• determine photonic spin Hall shifts of chiral nanoparticles with different chirality parameters under dual-symmetric conditions based on the permittivity, the permeability, and the particle radius, and obtain a correspondence mapping between the photonic spin Hall shifts and the different chirality parameters;
• an adjustment module, configured to:
• illuminate the chiral nanoparticle to be probed with circularly polarized light to induce Spin Hall Effect of Light, and when the Spin Hall Effect of Light is induced, adjust an incident light wavelength until dual symmetry is satisfied to obtain an optimal photonic spin Hall shift;
• and
• a determination module, configured to determine a chirality parameter of the chiral nanoparticle to be probed based on the optimal photonic spin Hall shift and the correspondence mapping.