Artificial microstructure construction method and optical system comprising artificial microstructure

Abstract

The invention discloses an artificial microstructure construction method and an optical system comprising an artificial microstructure. The method comprises the following steps: S10, determining the phase of to-be-generated partially coherent light at each cellular position of a corresponding artificial microstructure area according to the coherence of the to-be-generated partially coherent light;S20, calculating a rotation angle of the nano cells arranged at each cell position; S30, arranging the nano cells with different rotation angles at corresponding cell positions, and constructing theartificial microstructure for realizing light beam coherence regulation. According to the invention, a focused light beam is incident to the surface of the constructed artificial microstructure, and the incident area of the artificial microstructure is selected as required, so the partially coherent light beam with the corresponding coherence degree can be obtained.

Description

technical field [0001] The invention relates to the technical field of coherent optics, in particular to a method for constructing an artificial microstructure and an optical system including the artificial microstructure. Background technique [0002] As an important branch of modern optics, coherent optics has attracted the attention of a large number of researchers at home and abroad. Coherence actually represents the result of the correlation between some quantities of two points in the fluctuating light field, and this correlation can be measured by the fringe contrast of Young's double-slit interference. Coherence is an important characteristic of the light field, and it is of great significance to the study of the coherence regulation of the light field. It has been found that the coherence regulation of the light field is widely used in free space optical communication, lidar, laser nuclear fusion, special optical imaging, quantum optics, etc. It has important appli...

AI Technical Summary

Problems solved by technology

At present, artificial microstructures have been able to effectively control the amplitude, phase and polarization state of the light field at the sub-wavelength scale, which has high application value, such as realizing polarized optical anti-counterfeiting, achromatic lenses, high-saturation structural colors, etc. , and so far, artificial microstructures have rarely been involved in the regulation of the coherence dimension of the light field.

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