My specific point of reference is to a line of old Continuum/Quantel lasers (YG660, YG680, NY series--1990s to early 2000s). I managed to resurrect several of these systems to reliable operation (i.e. not plagued by repeated failures). This was "easy" in the sense that a discrete failure mode was obviously fixed when the cause was found. (These tended to be in the modules that charged the main capacitor for flashlamp firing or the module that controlled simmer current and capacitor discharge.) Though these lasers now operate without failure and produce useful output, they still are operating well below their original specified pulse energies. Because the problem now is no longer a binary one (working/not working) and could be due to a combination of factors, it is not straightforward to troubleshoot. One thing I found out, with an old YG681, is that simple replacement of old flashlamps with new ones only helped a bit, as did other factors (e.g. replacement of internal water ion exchange filter).
Because it might be fairly consistent from one model Nd:YAG to another, I'm wondering if commenters can provide a likely ranking of important factors. Several that come to mind are condition of the Nd:YAG cells and the flashlamp capacitor charging modules. Any specific remarks, things to check, or other remedial steps would be appreciated!
New Orleans, LA USA
To join or leave the molecular-dynamics-news email list, go to: