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New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Type Categorydown Subject Text Attachments
  4840   Mon Jun 20 11:38:49 2011 kiwamuUpdateABSLI-P curve of LightWave M126-1064-700The
I-P curve of the LightWave NPRO (M126-1064-700),
which was taken out from the MOPA box, was
 IP_curve.png 
  4841   Mon Jun 20 13:48:25 2011 KojiUpdateABSLI-P curve of LightWave M126-1064-700Hmm. Was the current within the operating
range? (i.e. Is it a 700mW laser or a 1W
one?)
  
  4842   Mon Jun 20 16:44:02 2011 steveUpdateABSLI-P curve of LightWave M126-1064-700 
 Put the serial numbers into
the elog. So we can identify the laser and
  
  4855   Wed Jun 22 15:24:10 2011 kiwamuUpdateABSLgot a laser controller for LightWavePeter
King came over to the 40m with a laser controller
and gave it to us.
 DSC_3150.JPGDSC_3153.JPG 
  4872   Thu Jun 23 22:59:45 2011 kiwamuUpdateABSLI-P curve of LWE The  IP_curve_small.png 
  4874   Fri Jun 24 00:13:24 2011 kiwamuUpdateABSLbeam profile measurement of LWEThe
beam profile of the LWE (LightWave Electronics)
NPRO was measured.
 beam_profile.png 
  4877   Fri Jun 24 07:49:23 2011 steveUpdateABSLI-P curve of LWE with serial numbers

    

       
            
  
  4917   Thu Jun 30 03:26:40 2011 kiwamuUpdateABSLstatus updateStatus
update of the absolute length (ABSL) measurement:
  
  4923   Thu Jun 30 14:11:55 2011 kiwamuUpdateABSLa photo of ABSL setup on the AP tableHere
is a picture of the latest ABSL setup at
the east part of the AP table.
 ABSLsetup.png 
  4925   Thu Jun 30 21:00:20 2011 kiwamuUpdateABSLfine alignment done(Just a quick report)
The
fine alignment of the ABSL laser injection
  
  4939   Tue Jul 5 16:09:54 2011 kiwamuUpdateABSLsome photos for ABSL setupHere
I show two photos of the latest ABSL (ABSolute
Length measurement) setup. 
 APtable.pngPSLtable.png 
  4940   Tue Jul 5 17:38:46 2011 kiwamuUpdateABSLABSL laser frequency-lockedIn this
past weekend the ABSL laser was successfully
 RFsetup.png 
  5079   Mon Aug 1 04:08:24 2011 kiwamuUpdateABSLArm length measurement : cavity kick techniqueI made some
attempts to measure the current length of
 ETMY_kick.png 
  5095   Tue Aug 2 16:55:21 2011 ranaUpdateABSLArm length measurement : cavity kick technique

    

       
            
 L.png 
  5117   Thu Aug 4 09:42:19 2011 KojiUpdateABSLABSL Laser shutter closedThe shutter of the ABSL laser is closed
for the vent work.
  
  8257   Fri Mar 8 12:57:57 2013 AnnalisaUpdateABSLBS installed on ITMY table Sendhil and I installed the S polarized
BS on the ITMY table to steer the NPRO beam
through the AR wedge and align it to the
  
  8258   Fri Mar 8 13:42:35 2013 JenneUpdateABSLBS installed on ITMY tableRe:  POY beam reduction.
We are able to lock the Yarm with
the beam / gain as it is.  I had thought
  
  8303   Mon Mar 18 12:02:12 2013 AnnalisaConfigurationABSLABSL setup for g-factor measurement of PRCMotivations
The ABSL
technique has been already used in the past
to measure the 
  
  8361   Wed Mar 27 21:53:21 2013 AnnalisaUpdateABSLBeat note of ATF auxiliary laserAfter measuring the beat note, the "Alberto"
NPRO auxiliary laser has been moved from
the PSL table to the POY table. Its beam
  
  8369   Thu Mar 28 23:00:30 2013 AnnalisaUpdateABSLBeat note of ATF auxiliary laser found 
The beat note for the ATF lab laser
has been found. 
  
  8495   Fri Apr 26 10:50:07 2013 AnnalisaUpdateABSLATF laser on PSLThe ATF NPRO auxiliary laser has been moved
on the PSL table. All the optics for beat
note measurement are in place and alignment
  
  8590   Thu May 16 08:32:05 2013 SteveUpdate40m upgradingETMY op table disabled 
All ETMY optical table electronics-
lasers-pds turned off, disconnected in order
 linguaa.jpg 
  8594   Fri May 17 00:32:32 2013 AnnalisaUpdate40m upgradingETMY - progress[Rana, Annalisa] 
 GREEN
 IMG_0536.JPG 
  8595   Fri May 17 15:38:51 2013 SteveUpdate40m upgradingETMY enclosure is on the way back 
 It  will arrive around 10 am Monday morning.
  
  8596   Fri May 17 16:06:14 2013 ranaUpdate40m upgradingETMY op table disabled 
 TODO:

    We need to replace all
  
  8597   Fri May 17 18:24:04 2013 AnnalisaUpdate40m upgradingETMY - progressI aligned the green beam into the Faraday.
I needed an HWP to have the right polarization
for the light entering the Faraday itself.
  
  8622   Thu May 23 00:16:32 2013 AnnalisaUpdate40m upgradingETMY - progress [Annalisa, Koji] 
 GREEN
 TransMonAndOplev.jpg 
  8637   Fri May 24 02:12:50 2013 AnnalisaUpdate40m upgradingETMY - Mode Matching for green 
 Mode
Matching calculation for green beam - Yarm
 ModeMatchingGreen.jpgModeMatchingGreenZoom.jpgXYpath.jpg 
  8638   Fri May 24 11:38:00 2013 KojiUpdate40m upgradingETMY - Mode Matching for greenI got confused. Is the mode calculation
in the cavity correct? 
Are you sure the wavelength in the
  
  8639   Fri May 24 12:50:25 2013 AnnalisaUpdate40m upgradingETMY - Mode Matching for green

    

       
            
  
  8645   Sat May 25 02:03:48 2013 AnnalisaUpdate40m upgradingETMY - Mode Matching for green - new calculation Mode
matching calculation for green - Yarm
I
 ModeMatchingGreenNEW.jpgModeMatchingGreenZoomNEW.jpgXYpathNEW.jpgphoto1.JPGphoto2.JPG 
  8646   Mon May 27 21:38:53 2013 AnnalisaUpdate40m upgradingETMY - Beam Dumps 
I put many razor dumps along the
IR/green path. The rejected beam from the
  
  8652   Tue May 28 22:11:23 2013 AnnalisaUpdate40m upgradingETMY - Yarm shutter cable 
 For some strange reason the
Yarm shutter cable runs up to the POY table,
  
  11521   Thu Aug 20 18:08:28 2015 IgnacioFrogs40m upgradingFatality. Something broke.

So
 image1.JPG 
  12625   Fri Nov 18 00:25:08 2016 JohannesOmnistructure40m upgradingAcromag Chassis DevelopmentI had Rich show me his approach to a chassis
for the Acromag modules. The document tree
for his design can be found on the DCC.
 acromag_bareboard.PNGXT_digital_340px_0.jpg 
  12634   Tue Nov 22 13:55:32 2016 JohannesOmnistructure40m upgradingAcromag ChassisCurrent Acromag chassis status:

I found out that Acromag offers
DIN rail mounting kits for the open boards,
 acroplan.pdf 
  10130   Sat Jul 5 04:18:45 2014 AndresUpdate40m Xend Table upgradeAdding Two Lenses After the Second Steering Mirror in Order Two Increase the Gouy Phase Difference Between the Sterring MirrorsI had been working on the Xend table optical
layout update. Since the two steering mirrors
in the Xend green are too close to each,
 7x 
  10191   Sun Jul 13 17:06:35 2014 AndresUpdate40m Xend Table upgradeXarm Table Upgrade Calculation and Diagrams of possible new table layout Current Mode Matching
and Gouy Phase Between Steering Mirrors
 CurrentOpticalLayout.pngNewSetUp.PNGAlaModeSolutionplots.pngEntireScaleRangeAlaModeSolution.pngNewXarmOptimizationFromFaraday.m 
  10195   Mon Jul 14 16:19:41 2014 AndresUpdate40m Xend Table upgradeTook the measurement for the Mode Matching Nick
and I measured the reflected power of the
green light in locked and unlocked. I'm working
  
  10207   Tue Jul 15 22:23:51 2014 AndresUpdate40m Xend Table upgradeScan the Xarm for the mode matching Nick and I with the help of Jenne
scan the green light when the cavity is unlocked.
Nick placed a Beam dump on the IR so that
  
  10226   Thu Jul 17 02:57:32 2014 AndresUpdate40m Xend Table upgradeFInish Calculation on Current X-arm mode MatchingData and Calculation for the
Xarm Current Mode Matching
 RawDataForTheModeGreenScan.pngResultForModeMatching.pngDataAndCalculationOfModeMismatch.zip 
  10237   Fri Jul 18 16:52:56 2014 AndresUpdate40m Xend Table upgradeFInish Calculation on Current X-arm mode Matching

    

       
            
 OldAndNewSetupPlotsOfDisplacementAndAngleAtTheETM.pngOldSetUpDisplacementAndNewSetup.m.zip 
  10290   Tue Jul 29 20:14:08 2014 AndresUpdate40m Xend Table upgradeXarm Green steering mirror upgrade Xarm Green Steering Mirror Upgrade
Nick
and I did the upgrade for the green steering
mirror today. 
  
  10291   Tue Jul 29 20:14:10 2014 KojiUpdate40m Xend Table upgradeXarm Green steering mirror upgradeThat
was super fast! Great job, Andres and Nic!
  
  10296   Wed Jul 30 10:16:54 2014 AndresUpdate40m Xend Table upgradeGreen Steering Mirror Upgrade completedGreen Steering Mirror Update
Yesterday,
Nick and I completed the green steering mirrors
upgrade. I attached the file that contained
 XarmUpgrade.pdfdWaistSize_dlensVsdWaistPosition_dlens.pngXarmNewOpticalSetup.PNG 
  2653   Wed Mar 3 18:32:25 2010 AlbertoUpdate40m Upgrading11 MHz RFPD elctronics** Please
add LISO file w/ component values.
 
 rfpd11_v2_TF.pdfrfpd11_v2_Noise.pdf 
  2655   Thu Mar 4 08:43:35 2010 AlbertoUpdate40m Upgrading11 MHz RFPD elctronics


   
        
            
 rfpd11_v2.fil 
  2656   Thu Mar 4 19:53:56 2010 AlbertoUpdate40m Upgrading11MHz PD designed adjusted for diode's resistance; 55 MHz RFPD designedAfter
reading this study done
 6x 
  2657   Thu Mar 4 22:07:21 2010 ranaUpdate40m Upgrading11MHz PD not yet designedUse 10 Ohms for the resistance - I have
never seen a diode with 25 Ohms.
p.s. PDFs can be joined together
  
  2704   Tue Mar 23 22:46:43 2010 AlbertoUpdate40m UpgradingREFL11 upgradedI modified REFL11 according to the changes
lsited in this
schematic (see wiki  / Upgrade 09
 2010-03-23_REFL11_model_to_meas_comparison.png 
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