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--[[User:Zjsimmons|Zjsimmons]] ([[User talk:Zjsimmons|talk]]) 17:03, 13 November 2014 (CST)
This week has not been so productive in the lab.
-updated the poster for MCAW, ended up taking way longer than i would have liked but perhaps that reflects that we're making progress and needed to thoroughly update!
-ordering a bunch of misc opto-mechanics as well as RF gear for the PDH set-up. I'm really liking this surplus store BMI surplus; they have lots of stuff.
-still haven't been able to get good feedback out of my new laser with the old diode, perhaps it's the diode, the output mode does look a little strange..
--[[User:Zjsimmons|Zjsimmons]] ([[User talk:Zjsimmons|talk]]) 18:11, 5 November 2014 (CST)
I moved the SHG cavity, and launched into it with the revised laser and TA. Picked Nick's brain about mode-matching and had to refresh my memory on that. Wrote a quick script to get my bearings. Nick suggested having telescope lens on translation stage: that way that lens would help with beam size and the coupling lens close to the cavity would help with waist position. After messing with the lens and coupling tune-up, saw nice locking. I'm not sure why it worked well, but tuning up the cavity seemed to make it better. Perhaps the laser is better behaved and that is making a difference. Note: interestingly you can see noise (e.g. your voice) on the lock. Perhaps we should invest in sound insulation. Note2: unfortunately, for whatever reason, it seems like when the lock drops sometimes it rails the piezo; not ideal behavior.
--[[User:Zjsimmons|Zjsimmons]] ([[User talk:Zjsimmons|talk]]) 12:55, 3 November 2014 (CST)
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