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Entry  Fri Oct 22 03:37:56 2010, Kevin, Update, PSL, Quarter Wave Plate Measurements 
    Reply  Sat Oct 23 02:25:49 2010, Kevin, Update, PSL, Quarter Wave Plate Measurements fits.png
       Reply  Mon Oct 25 02:25:21 2010, Koji, Update, PSL, Quarter Wave Plate Measurements 
Message ID: 3760     Entry time: Fri Oct 22 03:37:56 2010     Reply to this: 3768
Author: Kevin 
Type: Update 
Category: PSL 
Subject: Quarter Wave Plate Measurements 

[Koji and Kevin]

We measured the reflection from the PBS as a function of half wave plate rotation for five different quarter wave plate rotations. Before the measurement we reduced the laser current to 1 A, locked the PMC, and recorded 1.1 V transmitted through the PMC. During the measurements, the beam was blocked after the faraday isolator. After the measurements, we again locked the PMC and recorded 1.2 V transmitted. The current is now 2.1 A and both the PMC and reference cavities are locked.

I will post the details of the measurement tomorrow.

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