I'm working with a Sagnac interferometer. To split a laser beam (He-Ne), we are using a cubical, non-polarizing beam splitter from Thor Labs (BS031).
The beam splitter is fastened to a stand that is set to the height of the incoming laser beam using a simple clamp. I think I fastened the clamp too hard because there is clearly a small shattering of the BS on the bottom corner:
The laser beams come nowhere the crack seen in this picture, but I have no idea how beam splitters shatter and I know how sensitive interferometers are when it comes to alignment.
Will this shattering/crack cause my laser beam to never truly align or cause drifting of the alignment of the two beams when they recombine? Do I need a new beam splitter?