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another thought too is an epoxy that will not yellow over time, not sure if the epoxy that can be bought at normal stores will do this or not, the pump diode in my laser is 500mw and noticed it can generate heat on something that is not clear

Thank you, i will give that a try, it was originally glued all the way to create one optical unit, i.e if you glue 2 prisms into one unit you don't have that air gap that gives another surface for the light to create another reflection from. So basically any clear epoxy should work, i just need...

Hello I have a few CrystaLaser 532nm lasers and i have found on a few that the bond has failed on the IR filter causing a badly scattered beam. I have no clue on how to reattach the filter. I am thinking it's an epoxy or some other glue, it needs to be able to withstand a few hundred milliwatts...