More squeezing measurements were taken today, as shown in the following table, and plot attached.

• The last measurement was from yesterday, and is probably biased because the SEED beam was clipped on the beam splitter, so I didn't include it into the plot.
• The EOM was noisy and hard to lock with high green power (> 17mW input)
• The blue stars are the NLG I measured with SEED=1.2mW input, and the red circles are the theoretical NLG values calculated from the OPO threshold from alog 45528. I used SEED=1.1mW that day, and the green beam transmission shouldn't change. It seems there is a systematic difference of the NLG measurements, and we should look into this. (Use a scope to measure. Also, from the past we found that the NLG was related to the different dual resonance peaks overlap.)   
• The results are confusing that with such many dB's of squeezing, the level of anti-squeezing of several measurements are low. I cannot find an optical efficiency and phase noise value combination to match the squeezing and anti-squeezing. One probable reason I can came up is that there were not enough phase to cover the most anti-squeezing.
• If we trust the squeezing levels, the optical efficiency should be around 80%. The loss budget gives ~85%.