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Entry  Tue Mar 8 06:29:06 2011, kiwamu, Update, Green Locking, Intensity noise setup 
    Reply  Wed Mar 9 04:46:13 2011, kiwamu, Update, Green Locking, more intensity noise measurement intensity_setup.pngIntensityNoise.png
       Reply  Wed Mar 9 18:17:11 2011, kiwamu, Update, Green Locking, Intensity noise coupling diff_noise.pngIN_TF.png
          Reply  Thu Mar 10 14:06:54 2011, kiwamu, Update, Green Locking, Intensity noise limits the beatnote sensitivity diff_noise_Mar8.pngIN_TF_complete.png
             Reply  Thu Mar 10 14:22:58 2011, kiwamu, Update, Green Locking, Intensity noise limits the beatnote sensitivity 
                Reply  Thu Mar 10 14:29:05 2011, Koji, Update, Green Locking, Intensity noise limits the beatnote sensitivity 
                Reply  Thu Mar 10 14:30:53 2011, rana, Update, Green Locking, Intensity noise limits the beatnote sensitivity 
                   Reply  Thu Mar 10 16:00:53 2011, Aidan, Joe, Update, Green Locking, Intensity stabilization loop using beatnote DC. P1000313.jpgP1000314.jpgP1000315.jpgGREEN_ISS_LOOP.pdfScreenshot-C1ALS_OVERVIEW.adl.png
                      Reply  Thu Mar 10 21:45:34 2011, rana, Update, Green Locking, Intensity stabilization loop using beatnote DC. 
Message ID: 4400     Entry time: Thu Mar 10 14:30:53 2011     In reply to: 4398     Reply to this: 4401
Author: rana 
Type: Update 
Category: Green Locking 
Subject: Intensity noise limits the beatnote sensitivity 

There are 3 standard techniques to reduce this effect:

1) Stabilize the end laser by sensing the green light coming into the PSL before recombination and feeding back with SR560 (this is the only one that you should try at first).

2) Moving to the center of the MFD fringe via ETM steps.

3) Auto-alignment of the beam to the arm.

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