The numbers in red are the laser power when it is reflected at ETMX and is coming back to POP,
and the numbers in green are when it is reflected by ITMX.
According to this estimation, laser power at each place is as follows
FI output: 12mW
RFPD (reflected at ETMX): 22uW
RFPD (reflected at ITMX): 6.1mW
On the other hand, measured power at RFPD (reflected at ETMX) was 16uW (See also klog17432.
I also calculated laser power at RFPD (reflected at ITMX) as 2.7mW (See Fig2.)
Inconsistency between the calculated power from RFPD value and TMSX value may come from the accuracy of the reflectance and transmittance of each mirror.
But the difference of inconsistency ratio (16uW/22uW vs. 2.7mW/6.1mW) may come from the treatment of the offset such as dark current noise.
Anyway we need to check more closely again.
