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--[[User:Zjsimmons|Zjsimmons]] ([[User talk:Zjsimmons|talk]]) 10:52, 24 July 2014 (CDT)
Re: 1055nm Laser:
So at group meeting Deniz suggested we look at the output from the diode without feedback and see where the emission was centered. It's actually around 1067nm and we are unable to get that output band down to 1055 by temp tuning. Running it as cold as we could we only see about 1062. This would explain in part why the laser was a bear to tune, we're operating it far from it's actual 'natural' wavelength. Looking at the datasheets for 1060 diodes we have, it appears the one Jared was using was the closest. We looked at that on the spectrum analyzer and it is actually pretty much right where we want it. 1055 falls between two of the features in it's free-running emission spectrum. Next i switched our two diodes.
'''Note: apparently diode wiring colors conventions are not always followed. I had a scary moment mis-wiring the diodes because the chosen colors on one of the diodes were very strange. For future reference i'm going to check the connector whenever re-wiring.'''
A couple observations:
* Jared's 1060 diode operates at about 2x the current for some reason.
* The diode seems less tunable via temperature. Perhaps this is related to operating at higher current.
--[[User:Zjsimmons|Zjsimmons]] ([[User talk:Zjsimmons|talk]]) 17:48, 22 July 2014 (CDT)
Re: SHG Locking stability and laser tuning. It seems like we're making a little progress understanding what affects the shape of the error signal and positions of the cavity modes due to the different polarizations.
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