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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