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Hi
I have a basic question about the effect of transmitting a laser beam through multiple diffraction gratings. Suppose a diffraction grating was used to produce many spots as follows:
![Screen Shot 2020-05-06 at 2.03.23 am.png Screen Shot 2020-05-06 at 2.03.23 am.png](https://www.physicsforums.com/data/attachments/245/245296-4c83fa2337849a609ca484dca44280ba.jpg)
Would adding a second grating of the same pattern result in more spots/maximas? If so, would the resulting number be n^2 where n is the original number of spots/maximas? If not, what is the expected visual effect?
I have a basic question about the effect of transmitting a laser beam through multiple diffraction gratings. Suppose a diffraction grating was used to produce many spots as follows:
![Screen Shot 2020-05-06 at 2.03.23 am.png Screen Shot 2020-05-06 at 2.03.23 am.png](https://www.physicsforums.com/data/attachments/245/245296-4c83fa2337849a609ca484dca44280ba.jpg)
Would adding a second grating of the same pattern result in more spots/maximas? If so, would the resulting number be n^2 where n is the original number of spots/maximas? If not, what is the expected visual effect?
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