I just want to say I consistently get between 5500 and 7000 hours out of
SLA-250 lasers. I monitor the power and perform remelts as necessary.
They do need to be tuned regularly. I change out my 40 MW at about 20 MW at
these hours. I am doing one now with 6800 hours and it was at 19 MW. Your
lasers are probably not bad, just need regular remelts ( sometime more than
2 or 3). I have had cases where I would have to do 5 or 6 before the power
would return. Also, regular monitoring and adjusting of the "K" factors
for accurate power readings. I never turn mine off unless I see we will
not have any work for it for a week or more.
Thanks
Guy Bourdeau
Beckman Coulter
(305) 380-3806
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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