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Entry  Fri Jul 22 20:51:13 2011, frank, tara, DailyProgress, optic, cleaning opto mechanical parts IMG_1862.JPGIMG_1863.JPG
    Reply  Tue Jul 26 18:42:16 2011, raphael, tara, DailyProgress, optic, cleaning opto mechanical parts IMG_1866.JPGIMG_1867.JPG
       Reply  Thu Jul 28 01:54:21 2011, frank, tara, DailyProgress, optic, cleaning opto mechanical parts 2011_07_28.pngIMG_1869.JPGIMG_1874.JPGIMG_1875.JPG
          Reply  Fri Jul 29 00:42:19 2011, frank, tara, DailyProgress, optic, cleaning opto mechanical parts IMG_1880.JPGIMG_1883.JPGIMG_1889.JPGIMG_1886.JPGIMG_1878.JPG
             Reply  Tue Aug 2 23:58:40 2011, tara, DailyProgress, optic, New RCAV setup is locked IMG_1911.JPGrcav_2011_08_02.jpg
                Reply  Tue Aug 9 00:39:30 2011, tara, DailyProgress, optic, RCAV modematching optimized 
                   Reply  Mon Aug 15 23:13:53 2011, tara, DailyProgress, optic, RCAV modematching optimized 2011_08_15.png
                      Reply  Wed Aug 17 20:41:13 2011, tara, DailyProgress, optic, ACAV path is up layout_2011_08_17.jpg
Message ID: 653     Entry time: Tue Aug 9 00:39:30 2011     In reply to: 648     Reply to this: 658
Author: tara 
Type: DailyProgress 
Category: optic 
Subject: RCAV modematching optimized 

 I optimized mode matching for RCAV. The coupling is ~75%.  I also minimized RFAM from the 35.5MHz EOM.

            

          For RCAV mode matching, I moved only two lenses in front of RCAV (R=51.5 and 20.6 mm) to optimize the mode matching.

I have not tried moving other lenses or the mirror behind AOM yet, because I think 75% is enough for now.

 The reflected beam will cause the shot noise level to be higher, but it should not be critical for our current situation.

 

 

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