Laser beam shaping method based on D2NN metasurface
The invention discloses a laser beam shaping method based on a D2NN metasurface. The method comprises the specific steps that a laser beam shaping light path and a target light field based on the D2NN metasurface are designed; simulating a propagation process of a light field in a laser beam shaping...
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Main Authors | , , , |
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Format | Patent |
Language | Chinese English |
Published |
08.12.2023
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a laser beam shaping method based on a D2NN metasurface. The method comprises the specific steps that a laser beam shaping light path and a target light field based on the D2NN metasurface are designed; simulating a propagation process of a light field in a laser beam shaping light path through the D2NN, and sending the input light field into the D2NN to obtain an output light field; training the D2NN according to a difference value between the output light field and the target light field to obtain phase distribution of a D2NN metasurface; simulating the modulation phase of the super-structure atoms based on FDTD to realize full coverage of the phase of the super-structure atoms; the phase distribution of the D2NN metasurface and the modulation phases of the metasurface atoms are paired, and the metasurface atoms are arranged to generate the D2NN metasurface; and laser beam shaping is realized by using a D2NN metasurface. According to the method, the D2NN metasurface is used for achie |
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Bibliography: | Application Number: CN202311107030 |