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Message ID: 1472     Entry time: Thu Aug 14 15:24:14 2014
Author: Emily  
Type: Notes 
Category: optic 
Subject: Temporarily changed angle on half wave plate 

(Laser going to ACAV) I changed the angle of the half-waveplate before the PBS in order to increase the amount of power going into the fiber that goes to gyro lab.  Its original position was at 277 degrees.  I put a beam dump behind the lens (PLCX-25.4-38.6-UV-1064) so the higher power does not reach the photodiode.  The new position is at 248 degrees.  I will move it back before I leave.

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