Looked into more of the green power fluctuations coming out from SHG, and found something interesting:

• Both of the green and the SHG Trans red power have fluctuation trends (both low and high frequency) related to the SQZ laser power fluctuations. Attachment are data of laser power, green power, and red power for 7 days with same time axis.
• The laser power has more high frequency fluctuations when the TTFSS is ON, and this also contributes to the green power fluctuations.