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Entry  Mon Jan 23 15:16:52 2017, gautam, Update, Optical Levers, ETMY Oplev HeNe needs to be replaced ETMY_Oplev.pdf
    Reply  Mon Jan 23 17:24:26 2017, Steve, Update, Optical Levers, ETMY Oplev HeNe is running hot ETMY_oplev__lasers.png
       Reply  Tue Jan 24 17:52:15 2017, Craig, Update, Optical Levers, ETMY Oplev HeNe is replaced 6x
          Reply  Wed Mar 1 08:28:04 2017, Steve, Update, Optical Levers, oplev laser RIN RIN_1103P.pngRIN_HeNe.png
             Reply  Thu Mar 2 13:59:04 2017, Steve, Update, Optical Levers, oplev laser RIN 1103P@2d.png
                Reply  Thu Mar 2 17:58:45 2017, rana, Update, Optical Levers, oplev laser RIN 
                   Reply  Fri Mar 3 17:24:21 2017, Steve, Update, Optical Levers, oplev laser RIN 3march17.pdf
                      Reply  Wed Mar 8 15:28:37 2017, Steve, Update, Optical Levers, oplev laser RIN RIN.jpgRIN_1103P_rotated.pdf
                      Reply  Mon Apr 10 09:49:32 2017, Steve, Update, Optical Levers, oplev laser RIN test planning 
                         Reply  Mon Apr 10 14:21:57 2017, rana, Update, Optical Levers, oplev laser RIN test planning 
       Reply  Tue May 30 13:36:58 2017, Steve, Update, Optical Levers, ETMY Oplev HeNe is replaced oplevETMY120d.png
          Reply  Tue Jan 15 18:16:00 2019, gautam, Update, Optical Levers, ETMY Oplev HeNe needs replacement OLRIN.pdfOLsums.png
             Reply  Fri Jan 18 12:52:07 2019, gautam, Update, Optical Levers, BS/PRM Oplev HeNe replaced OLRIN_20190118.pdf
Message ID: 13018     Entry time: Tue May 30 13:36:58 2017     In reply to: 12747     Reply to this: 14402
Author: Steve 
Type: Update 
Category: Optical Levers 
Subject: ETMY Oplev HeNe is replaced 

Finally I reallized what is killing the ETMY oplev laser. Wrong  power supply, it  was driving the HeNe laser by 600V higher voltage than recommended. Power supply 101T-2300Vdc replaced by 101T-1700Vdc ( Uniphase model 1201-1, sn 2712420 )

The laser head 1103P, sn P947049 lived for 120 days and it was replaced by sn P964431   New laser output 2.8 mW,  quadrant sum 19,750 counts

 

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