Jour Fixe

NJ, PG, WFP, kHz

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