Hello everyone, I'm hoping I can find some help with the issue in facing. I'm fairly new to lasers so any help is greatly appreciated, I have a coherent yag laser head which connects to the diode / power supply through fiber cable, the head had one of the mirrors and the lens broken off, the lens indicated by a green line in the pic I was able to glue back on using the marks from where it was previously mounted, the mirror on the far side of the resonator was broken off and the one closest to the lens broke off when I was checking the rest of the optics both indicated by the red line, at the moment both mirrors are adhered by 2 way tape which allows for some amount of turning. The biggest problem I'm facing is the fact that the diode pumps IR light into the resonator making it impossible to make any adjustments live, and yes I do have the proper eye protection. So my questions are, how to align the two mirrors, how to overcome the IR light issue, can the mirrors be aligned with the yag crystal? In place, do the mirrors have to be facing in any particular direction to reflect or pass the beam through.