I did another cavity scan for the OPO in vacuum.

The image is attached as below.  (The y-axes units are in volts. )

• The 00 mode for green calculated from transmitted power is now ~83% . This is higher than the last measurement here.
• The 20 mode being 13% of the 00 mode, which is also better.
• The PZT calibration is still ~20V/FSR.

Next steps:

• OPO Tec Servo controller setting for vacuum. Currently the servo works, but when we set a new temperature, the temperature goes to the other direction and then comes back.
• OPO loops improvements. (Nutseinee and Daniel are working on)
• Set the position of the crystal to the optimized location.
• Send SEED in, and measure the SEED beam mode for homodyne path mode matching, with the temperature for dual resonance without NLG.