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Message ID: 8715     Entry time: Mon Jun 17 23:53:03 2013
Author: Annalisa 
Type: Update 
Category: Green Locking 
Subject: Y arm locked on green!! 

Y arm locked on green carrier in 00 mode!

It locked at almost 280 cts, and the transmitted power on the PSL table is  about 40 uW.

To make it lock on the carrier I had to flip the sign of the error signal in the PDH loop, so I put a phase shifter (a Pomona box with a 23 uF capacitor) right before the LO input of the PDH box (on the model of the X arm).

Tomorrow I will put more details about the power budget and the phase shifter transfer function.

 

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