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Entry  Wed Dec 11 15:01:57 2019, Jon, Summary, PSL, PMC cavity ringdown measurement IMG_0101.jpg
    Reply  Thu Dec 12 19:20:43 2019, Yehonathan, Update, PSL, PMC cavity ringdown measurement IMG_0105.jpegTEK00001.PNG20191212_151642.jpg
       Reply  Fri Dec 13 12:28:43 2019, Yehonathan, Update, PSL, PMC cavity ringdown measurement Ringdown_InitialProcess.pdf
          Reply  Tue Dec 17 20:45:30 2019, rana, Update, PSL, PMC cavity ringdown measurement 
          Reply  Fri Dec 27 15:01:02 2019, Yehonathan, Update, PSL, PMC cavity ringdown measurement PDAOMResponse.pdfPMCTransmission.pdfRingdownsAndRefs.pdfTwoExponentialFitAOM0.3V.pdf
             Reply  Tue Dec 31 03:03:02 2019, gautam, Update, PSL, PMC cavity ringdown measurement 
       Reply  Mon Dec 16 18:19:42 2019, shruti, Update, PSL, PMC cavity ringdown measurement : beat-note disruption IMG_0040.jpg
Message ID: 15102     Entry time: Tue Dec 17 20:45:30 2019     In reply to: 15097
Author: rana 
Type: Update 
Category: PSL 
Subject: PMC cavity ringdown measurement 

idk - I'm recently worried about the 'thermal self locking' issue we discussed. I think you should try to measure the linewidth by scanning (with low input power) and also measure the TF directly by modulating the power via the AOM and taking the ratio of input/output with the PDA55s. I'm curious to see if the ringdown is different for low and high powers

Quote:

I plan to model the PD+AOM as a lowpass filter with an RC time constant of 12us and undo its filtering action on the PMC trans ringdown measurement to get the actual ringdown time.

Is this acceptable?

This is an ole SURF report on thermal self-locking that may be of use (I haven't read it or checked it for errors, but Royal was pretty good analytically, so its worth looking at)

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