Jour Fixe

Members in attendance: NJ, SS, DF, WFP, PG, FW

Atom Lab:

Windows installation and Labview installation done on all PCs. Also the Xabbu4 PC is more or less fully ready.

Higher order lattice AC Stark shifts are too large at high intensities to go on with in-situ AC Stark shift measurements. NJ will write to Ernst to postpone the frequency measurement.

For the new triplet laser test-station:

FW is working on temperature controller based on HTC 3000

Still waiting for PCBs of laser driver (new version 2.4)

Quench Laser:

Went back to old KMK laser diode from ThorLabs laser driver

With a bad lock to cavity, 50 mW blue out of 350 mW IR (Still IR present with blue light????)

Error signal from lockin amplifier looks bad, the DC input is dominating the output

Resonator Lab:

Some problems with windows installation in reslab due to lack of a proper protocol. After all software installations, SS will try to implement the repaired frequency comb and see if all works OK.

Waiting for some hardware from Menlo to enable in coupling of light to new PCF

New clock laser fiber between labs

Some problems with the amplitude fluctuations in error signal of fiber stabilization. Either some electronic issue or polarization fluctuations. It is still lockable though.

Next meeting: 20.01.2020