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Nick Brewer: Difference between revisions
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'''<big>5/23/14</big>'''
Today the cavity is working great. There were a few small peaks between the 0,0 peaks but they were small and I was able to get rid of them by adjusting the mirrors and mode matching lenses. Yesterday's problems might have been a laser issue due to the weather. This morning the humidity was 30%, I'm not sure what it was yesterday but I should keep an eye on how that affects how well the cavity is behaving.
I must have done the <math>I_r/I_{in}</math> measurement wrong on 5/21/14. Today I measured the same finesse that I got two days ago (~65.5%). I looked at the reflected signal before it went through the beam cube and got a similar measurement for <math>I_r/I_{in}</math> (5.4/7.02=0.769). I think the reflectivity needs to be measured once the temperature is optimized for green generation. When I did this I got <math>I_r/I_{in}=0.239</math>, which accounts for a 106 mV noise the photodiode was seeing.
'''<big>5/22/14</big>'''
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