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IOO (OMC)
keiko.kokeyama - 17:47 Wednesday 01 July 2020 (14656) Print this report
OMC scan with IY single bounce

Here is the result of the OMC scan with IY single bounce. The noise floor is not fitted very well because trere are too many higher order mode to take all into account. The 45MHz SB is considered only up to the 3rd order spacial mode. The current fiting already takes 12 mins on my laptop.

Finesse was 660 with this data. The spacial 3rd order of upper f1 sideband which is very close to the carrier is seen, and the power fraction is 0.13% w.r.t. the 0th order carrier.
 

Carrier Sub tota Upper 17MHz sidebands  Lower 17MHz sidebands  Upper 45MHz sidebands Lower 45MHz sidebands 
order: mW

CA0: 9.05
CA1: 1.6379 
CA2: 0.55524
CA3: 0.31049
CA4: 0.18633
CA5: 0.12336
CA6: 0.025Sub total 
order mW
CA0: 9.247, 9.6409 => 9.4
CA1: 0.38
CA2: 0.62
CA3: 0.26
CA4: 0.10
CA5: 0.015
CA6: 0.025
 
Upper 17MHz sidebands 
order mW
0 0.040
1 0.013
2 0.0026
 
Lower 17MHz sidebands 
order mW
0 0.041
1 0.013
2 0.0023
 
Upper 45MHz sidebands 
 
order mW
0 0.049814
1 0.014056
2 0.003407
 
Lower 45MHz sidebands 
order mW
0 0.053
1 0.017
2 0.0043
order: mW

usb0: 0.046954
usb1: 0.0054411
usb2: 0.0010746
usb3: 0.011599
usb4: 0.0085595
usb5: 0.011851
order: mW

lsb0: 0.046135
lsb1: 0.0053205 
lsb2: 0.0016134
lsb3: -0.00056294
lsb4: 0.031572
lsb5: 0.055184 
order: mW

USB0: 0.052848
USB1: 0.0095976
USB2: 0.0033689
order: mW

LSB0: 0.055087
LSB1: 0.022974
LSB2: 0.013708

See the attached file and plots for the detailed results.

To compare the cleaner beam (X arm bounce), see this post.
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Comments to this report:
keiko.kokeyama - 21:58 Thursday 02 July 2020 (14679) Print this report

I'd like to update the result as attached files.

I changed the fitting setting so that the broadest higher order spatial mode at around 150 MHz in x axis was not considered. In the result a sideband power is different from the original post but it's minor (I believe).

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keiko.kokeyama - 12:49 Sunday 05 July 2020 (14692) Print this report

Updating the results.

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