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--[[User:Zjsimmons|Zjsimmons]] ([[User talk:Zjsimmons|talk]]) 18:00, 23 October 2014 (CDT)
The next order of business is getting the laser to behave better. This should allow us to better see spectral hole burning and just make our lives easier as well as be confident we won't drop the seed to the fiber amplifier.
To that end, i spent some time in the last week putting together a new laser prototype. Perhaps this is an unworthy side project, but i am rationalizing it by a) i want to understand these issues in depth myself and b) it should provide a test-bed for our future students to try some investigations: including feedback as fn of collimation, decoupling grating rotation from translation, etc. I intend to document my findings as well as i think that our progress/documentation on this issue as a group is pretty thin and wold like to see it expanded upon/brought to a more satisfying (not conclusion necessarily) but point anyway.
So far it seems to control diode temp quite well, i.e. the bare diode emission moves about 1nm/3deg C, which is apparently reasonable. This diode is centered at about 1066, so i don't think we'll be able to pull it to get it where we want it, but i'll see what i can learn from it. Feedback doesn't seem to be working very well yet, i.e. I cannot see a sharp feedback feature, although i see some feedback.
In other news, we're baking out the can for the reference cavity and it seems to be working, the pressure has come down to about 5E-6 over the last couple days at about 100degF.
--[[User:Zjsimmons|Zjsimmons]] ([[User talk:Zjsimmons|talk]]) 18:33, 15 October 2014 (CDT)
Recap of last 2 weeks:
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