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Message ID: 73     Entry time: Mon Feb 22 18:58:23 2010
Author: Tara Chalermsongsak 
Type: Laser 
Category: RefCav 
Subject: beat frequency between transmitted beams 

 Today  we finally see the beat between transmited beams from Ref Cavity and A Cavity.  Now we are trying to use a local oscillator [IFR2023b] to demodulate the signal.

The beat signal will be fed to a low pass amplifier and  sent to IFR2023 as external  frequency modulation.

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