[Midooka, Yokogawa]
The crystal temperature of the main laser (Mephisto) was changed from 27 degree to 46.4 degree by Nakano-san. Then we found the beatnote between the main laser and a Prometheus by sweeping the Prometheus temperature.
- Mephisto temperature was at 46.4 degree.
- We found the beatnote at about 40 MHz when Prometheus temperature are at 23.4 degree and 25.5degree.
- Mode hop of a Prometheus seem to occur at between 24.2deg to 24.6deg.
- Amplitude of the beatnote was about -22 dBm. (I forgot to measure the incident laser power to the RFPD.)