Originally Posted by
sugeek
Song - That is the best advise I have seen as a reply. The laser module in question is in fact made of two lasers with different polarizations (one being vertical | and one horizontal - combined through a polarized beam splitter (PBS) cube to equal a +) if the optics or mirrors before the PBS get out of alignment you could get two dots :. I appreciate you reaching out to learn more about your product, seeking more knowledge should never be seen as a bad thing. This forum is here to put information out in the open, because knowledge is power. Please feel free to ask questions and learn.
-Adam