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Entry  Wed Nov 9 14:49:07 2011, kiwamu, Summary, LSC, Characterization of the Power Recycled Michelson contour_loss.pngcontour_MM.png
    Reply  Wed Nov 9 16:29:36 2011, Koji, Summary, LSC, Characterization of the Power Recycled Michelson 
       Reply  Fri Nov 11 14:55:47 2011, kiwamu, Summary, LSC, Characterization of the Power Recycled Michelson : take 2 rec_gain.pngrefl.pngpbu.pngMM.pngloss.png
Message ID: 5851     Entry time: Wed Nov 9 16:29:36 2011     In reply to: 5849     Reply to this: 5875
Author: Koji 
Type: Summary 
Category: LSC 
Subject: Characterization of the Power Recycled Michelson 

Difficult to understand.

The mode matching does not change the recycling gain. It changes the coupling of the incident light into the cavity.
It changes the reflected and accumulated power, but the recycling gain is not affected.

The recycling gain is determined by the optical configuration and the optical loss in the cavity.

In the actual measurement, of course, we should take both of the loss and the mode matching into account.
But this is the issue of the measurement method.

The essential questions are:
How much is the actual recycling gain? And how does it affect the signal extraction?

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