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In this article, a new method to produce gratings with linearly variable spatial frequency is proposed and the expression of grating frequency is obtained. By inserting special lenses into the two light paths, the production of grating with linearly variable spatial frequency is realized. The modification of frequency can be easily achieved by properly adjusting the experimental parameters. The simulated hologram is given.
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Keywords:
- holographic grating /
- holograph /
- grating with variable spacing







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