B Double Double Slit Experiment -- Question about Variations

[Myslius]

TL;DR

Double Double Slit Experiment

emitter -> double slit -> double slit -> detector.

Was an experiment ever made where two double slits are placed at some distance between each other? What kind of interference pattern would you get? What would happen if second slits were placed at the position where there is destructive interference pattern, would you see no light at all?

 

[BvU]

Hi,

You should know by now that the standard PF answer is: what do you think?

But that would be corny. So: yes, of course folks have experimented themselves silly with all kinds of variations. You seem to think of narrow double slits at small distance apart wrt the features of the diffraction pattern. There isn't much fun with that: dark remains dark and so on. Much more excitement when playing on a bigger scale: removing entire peaks from the diffraction pattern for example. Google 'spatial filtering' to find out more.

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[Myslius]

What i think, the intuition says that detector should not detect any (very little) intensity. Yet, intuition might be wrong here. In the case of double polarisation filters intensity doesn't decrease if filters are aligned. Would love to see data from experimental setup. Was looking around, didn't find any papers, maybe i missed something.

 

[BvU]

What i think, the intuition says that detector should not detect any (very little) intensity. Yet, intuition might be wrong here. In the case of double polarisation filters intensity doesn't decrease if filters are aligned. Would love to see data from experimental setup. Was looking around, didn't find any papers, maybe i missed something.

No papers, it's all straightforward calculation. Don't see the similarity with polarization filters.

Intuition doesn't come in: no photons $\rightarrow$ dark ! ... slits or no slits.

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