R&D (FilterCavity)
YuhangZhao - 02:47, Monday 03 February 2020 (2017)
FDS with detuning around 50Hz

Aritomi, Eleonora, Yuhang

We tried to measure FDS with correct detuning (this time produced squeezing level is only 5 dB and we are thinking temperature may be responsible for this change). However, low frequency part is dominated by back scattering as expected.

Good thing is that the rotation part of the curve is still visible from the noise curve. We are also thinking to increase the average times to further reduce the spectrum curve thickness, so that the rotation part can be more clear. It's also better to analyze the data as soon as we take it and if it's not correct detuning, we should tune the detuning and take the data again.

Images attached to this report
2017_20200203000335_fds20200131.png