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Entry  Sat Jan 6 05:18:12 2018, Kevin, Update, PonderSqueeze, Displacement requirements for short-term squeezing displacement_noise.pdfnoise_budget.pdf
    Reply  Sat Jan 6 13:47:32 2018, rana, Update, PonderSqueeze, Displacement requirements for short-term squeezing 
       Reply  Sat Jan 6 23:25:18 2018, Kevin, Update, PonderSqueeze, Displacement requirements for short-term squeezing displacement_noise.pdfnoise_budget.pdfangles.pdf
          Reply  Sun Jan 7 03:22:24 2018, Koji, Update, PonderSqueeze, Displacement requirements for short-term squeezing 
             Reply  Sun Jan 7 11:40:58 2018, Kevin, Update, PonderSqueeze, Displacement requirements for short-term squeezing 
                Reply  Sun Jan 7 17:27:13 2018, gautam, Update, PonderSqueeze, Displacement requirements for short-term squeezing 
                   Reply  Sun Jan 7 20:11:54 2018, Koji, Update, PonderSqueeze, Displacement requirements for short-term squeezing 
                      Reply  Thu May 3 00:42:38 2018, Kevin, Update, PonderSqueeze, Coil driver contribution to squeezing noise budget 
Message ID: 13511     Entry time: Sat Jan 6 23:25:18 2018     In reply to: 13509     Reply to this: 13512
Author: Kevin 
Type: Update 
Category: PonderSqueeze 
Subject: Displacement requirements for short-term squeezing 

 

Quote:
  • ought to tune for 210 Hz (in-between powerlines) since 100 Hz is tough to work due to scattering, etc.

We can get 1.1 dBvac at 210 Hz.

The first two attachments are the noise budgets for these optimized angles. The third attachment shows squeezing as a function of homodyne angle and SRC detuning at 210 Hz. To stay below -1 dBvac, the homodyne angle must be kept between 88.5 and 89.7 degrees and the SRC detuning must be kept between -0.04 and 0.03 degrees. This corresponds to fixing the SRC length to within a range of 0.07/360 * 1064 nm = 200 pm.

Attachment 1: displacement_noise.pdf  21 kB  | Show | Hide all | Show all
Attachment 2: noise_budget.pdf  21 kB  | Hide | Hide all | Show all
noise_budget.pdf
Attachment 3: angles.pdf  95 kB  | Hide | Hide all | Show all
angles.pdf
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