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Entry  Sat Jun 12 19:41:04 2010, Alberto, Update, Locking, 40m Upgrade Optickle Model optickleIFOworkingpoint.pdf
    Reply  Sun Jun 13 08:28:44 2010, valera, Update, Locking, 40m Upgrade Optickle Model 
       Reply  Mon Jun 14 07:57:07 2010, alberto, Update, Locking, 40m Upgrade Optickle Model 
          Reply  Tue Jun 15 21:28:44 2010, alberto, Update, Locking, 40m Upgrade Optickle Model allTransferFunctions_DARMoff_0.pdfallTransferFunctions_DARM2AS_10pmDARMoffset.pdfJan_DARM2AS.pdf
Message ID: 3075     Entry time: Mon Jun 14 07:57:07 2010     In reply to: 3074     Reply to this: 3079
Author: alberto 
Type: Update 
Category: Locking 
Subject: 40m Upgrade Optickle Model 

Quote:

 

 In my calculation of the digital filters of the optical transfer functions the carrier light is resonant in coupled cavities and the sidebands are resonant in recycling cavities (provided that macroscopic lengths are chosen correctly which I assumed).

Carrier and SB (f2) shouldn't be resonant at the same time in the SRC-arms coupled cavity. No additional filtering of the GW signal is wanted.

The SRC macroscopic length is chosen to be = c / f2 - rather than = [ (n+1/2) c / (2*f2) ] - accordingly to that purpose.

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