SP 127 HeNe - Cleaning & Adjustment
Hi all
I've just acquired a Spectra Physics 127 HeNe, a laser of pure beauty
When I first switched the laser on it produced a <1mW faint red dot. On removing the cover I see three adjustment points along the tube. After Googling and watching a YouTube video I made a *very* small adjustment to these pots and the result is that the laser now outputs 15mW. I'm reluctant to make too much adjustment as I really am quite unsure how much movement the tube will take and whether or not there is a risk of cracking the tube through over adjustment. There are also some artefacts around the beam which I suspect may be from the OC (or other optic) being dirty.
Can anyone offer any basic advice on how to get the best from the laser? Things such as the correct adjustment procedure for tube alignment. Removal, cleaning & refitting of the HR and OC etc
I'll probably wait until the UKLEM to do the work but I figured there would be no harm in asking the question here first.
Many Thanks
Jem
Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001