Jour Fixe

NJ, PG, WFP, kHz

Atomslab

TiSa SHG

Toptica does not tell anything about the waist in the cavity

Tried different incoupling lenses, but ended up to either end of the alignment

1.3 W @ f=100mm

Outcoupling beam cant kept symmetrically

Probably first collimation lense not perfectly collimating → You can't get the beam symmetrical over all beampath with the prism

It is crucial, to have the beam well collimated, since you can't compensate for an astigmatism with the prism.

Build a spare laser for L4 but in Littrow configuration

SWAP experiments

With SWAP light → Number of atoms still go down (7.5 µW, 20 MHz detuned)

Going closer to resonance, line becomes narrower

Atomcount in the DT are low: TMOT?

Quench

Power optimized: Back to 40 mW infront of fiber

Now working on frequency stabilization and tuning it to resonance

Reslab

SS + NJ got the comb back working

Good modelock point

Next: Coupling to new PCF