40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Mon Jul 7 16:39:09 2014, manasa, Update, PSL, PMC ringdown setup PMC_ring.png
    Reply  Mon Jul 7 23:19:55 2014, rana, Update, PSL, PMC ringdown setup 
       Reply  Wed Jul 9 16:33:05 2014, manasa, Update, PSL, PMC ringdown setup 
Message ID: 10164     Entry time: Wed Jul 9 16:33:05 2014     In reply to: 10149
Author: manasa 
Type: Update 
Category: PSL 
Subject: PMC ringdown setup 



I moved stuff on the PSL table to accommodate the PMC ringdown setup.

I used the beam that leaks from the steering mirror at the PMC transmission that was dumped to a razor blade dump. I installed a Y1 to steer the beam to the ringdown PD. Power in the beam 75mW. 

 I am guessing that 75 mW will burn / destroy any Thorlabs PD. I hope that mW is supposed to be uW.

 It was ~7.5mW and measured ~2V at the PD output (given its range 0-5V ) on the oscilloscope . So PD is safe !

ELOG V3.1.3-