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Message ID: 2334     Entry time: Thu May 2 14:38:41 2019
Author: anchal 
Type: DailyProgress 
Category: South Cavity 
Subject: Corrected input polarization into South Cavity 

In this week's group meeting, Andrew mentioned that the polarization axes of the AlGaAs mirrors are not properly aligned and there are two close by resonances at different polarizations. I indeed was seeing a small blip near resonance during a laser PZT  scan. I fixed hte input polarization with the Half wave plate infront of South cavity at  (56,26). I've attached two scan measurements from oscilloscopebefoer and after the optimization. The transmission increased by 10.1%.

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Attachment 1: SCavPolOptimization.pdf  106 kB  Uploaded Thu May 2 15:43:47 2019  | Hide | Hide all
SCavPolOptimization.pdf
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