Hey there. I'm learning about lasers and currently trying to set up a system for experiments. I have found a learning curve with the optics. Can anyone suggest something to either build or an already existing setup for a 915nm 200w 106.5um fiber coupled diode laser. My plan is to attached it to a telescope. Would I need a focus lense or an expansion lense or both? Not sure, I've done some research but any precise information would be great. Thanks!