Koji, Craig

We became interested in Sheila and Jenne's 9 MHz RIN measurement, and so set out to measure a more complete spectrum of the 9 MHz demodulated REFL PD noise to gain some perspective on the 9 MHz amplitude modulation transmitted through the IMC.

First we shuttered the PSL and measured a full suite of dark noise spectra.  
Then we requested ITMs and SRM misaligned, PRM aligned, and 8 watts of input laser power.  This gave us 30.97 mW on REFL A LF and 28.52 mW on REFL B LF.

This is not a direct comparison of 9 MHz RIN as measured by Jenne and Sheila; their measurement is capable of picking out a single sideband, while ours is the usual carrier and sidebands beatnote.  We'll think about the comparison of each measurements' RIN.