Today we have tested the second PMC that we have assembled.
We have obtained the 00 mode;
We measured the finesse (~300);
We have scanned the PMC PZT and we see 3 FSR;
We also noted again the presence of a second 00 mode and we confirmed that it was due to laser mode hopping. This has been checked
by injecting a voltage (0.2V) in the temperature input of the laser. Once the voltage was applied the second mode disappeard.
We think that it is enough PMC testing for now. I am tempted to assemble a third PMC, while we should try to fix the glass PMC.
We need to work on the lab organization too. |