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Message ID: 30
Entry time: Tue Oct 30 13:58:07 2007
In reply to: 29
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| Author: |
ajw |
| Type: |
Configuration |
| Category: |
IOO |
| Subject: |
MC Ringdowns |
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Here's a quick fit-by-eye to the latter part of the data from tek00000.xls.
The prediction (blue) is eqn 41 of
http://www.ligo.caltech.edu/docs/P/P000017-A.pdf
T1 = T2 = 0.002. Loss1 = Loss2 = 150 ppm.
MC3 assumed perfectly reflecting.
Velocity = 320 um/s (assumed constant), 2 usec into the ringdown.
OK, there's one little fudge factor in the prediction:
I multiplied D by 2. |
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% CavityRingdown.m
% Eqn 41 of
% "Doppler-induced dynamics of fields in Fabry–Perot
% cavities with suspended mirrors", Malik Rakhmanov (2000).
% http://www.ligo.caltech.edu/docs/P/P000017-A.pdf
clear all
% read in ringdown timeseries:
at = importdata('tek00000.csv');
... 121 more lines ...
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