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The beamsplitter in Michelson interferometer influenced the light, going through respectively being reflected by 90°.

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Image source: Wikipedia

Has somebody of you ever see what shape has the spot from a laser source on the observation screen if one of the mirrors is not installed?

Edit: There is a comment:

I have not and I no longer have access to a Michelson interferometer. If you have observed fringes then they might be due to the multiple reflections from the top and bottom of the beam splitter and the compensator.

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HolgerFiedler
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1 Answers1

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Yes I have blocked the light from one of the mirrors. The image on the screen is simply the light from your laser projected onto the screen. The interference pattern goes away. The setup below produces the two images that you see. I have two beam splitters, one is just plate glass, because I wanted to show the image that returns to the laser too. If I block either mirror the interference patterns go away. I hope this helps. enter image description here enter image description here

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