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Entry  Wed Nov 18 17:49:05 2020, Paco, DailyProgress, Optics, beam profiles 2020_11_18_ecdlprofile.png2020_11_18_mephistoprofile.png
    Reply  Mon Dec 21 16:35:14 2020, Anchal, DailyProgress, Optics, Took beam profile of laser right off the head LaserHeadBeamProfileAvg.pdfLaserHeadBeamProfileX.pdfLaserHeadBeamProfileY.pdf
       Reply  Tue Dec 22 15:54:03 2020, Anchal, DailyProgress, Optics, Took beam profile of near EOM area BeamProfileNearEOMAvg.pdf
          Reply  Mon Dec 28 15:51:51 2020, Anchal, DailyProgress, Optics, Mode matching solution for Cavity Solutions1-7merged.pdf
             Reply  Thu Dec 31 16:41:59 2020, Anchal, DailyProgress, Optics, Mode matching solution for Cavity Solutions.pdf
                Reply  Wed Jan 6 09:34:34 2021, Anchal, DailyProgress, Optics, Corrected analysis and found better solutions. Solutions.pdf
                   Reply  Fri Jan 8 17:00:26 2021, Anchal, DailyProgress, Optics, Included lens made by cavity input mirror and distrotion due to crystal Solutions.pdf
                   Reply  Fri Jan 8 17:17:19 2021, Anchal, DailyProgress, Optics, Included lens made by cavity input mirror and distrotion due to crystal Solutions.pdf
                      Reply  Tue Jan 26 11:33:32 2021, rana, DailyProgress, Optics, Included lens made by cavity input mirror and distrotion due to crystal 
                      Reply  Tue Jan 26 11:34:51 2021, rana, DailyProgress, Optics, Included lens made by cavity input mirror and distrotion due to crystal 
Message ID: 1882     Entry time: Tue Dec 22 15:54:03 2020     In reply to: 1881     Reply to this: 1884
Author: Anchal 
Type: DailyProgress 
Category: Optics 
Subject: Took beam profile of near EOM area 
  • After installing a 400mm focal length plano-convex lens at 24" from the laser head at (20, 12), we found that higher-order modes are present in the beam.
  • We installed an iris at 34" from laser head at (17, 5)
  • Configuration file is BeamProfileConfiguration2um.ojf.
  • Used fitBeamWidth function of ala mode to fit X and Y beams separately and then their geometric mean.
  • We'll use the geometric mean as the seed profile for future calculations.
  • Found a beam waist of 306 um at 58" from the laser head.
  • Installing the EOM between 49" and 52" from the laser head where the beam waist is between 1 mm and 740 um.

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Attachment 1: BeamProfileNearEOMAvg.pdf  9 kB  | Hide | Hide all
BeamProfileNearEOMAvg.pdf
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