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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: 15098     Entry time: Mon Dec 16 18:19:42 2019     In reply to: 15096
Author: shruti 
Type: Update 
Category: PSL 
Subject: PMC cavity ringdown measurement : beat-note disruption 

I have removed the PD55 + ND filter attached to it (see Attachment) and placed it next to the oscilloscope, after disconnecting its output and power supply. The post is still in place.

I did see the beat after that.

Quote:

{Yehonathan, Rana, Jon}

To check whether we laser is being shut fast enough for the ringdown measurement we put a PD55 in the path that leads to the beat note setup. The beam is picked off from the back steering mirror after AOM and before the PMC.

@Shruti the PD is now blocking the beam to your setup.

 

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