Hannover 2020 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 39: Posters: Quantum Optics and Photonics III

Q 39.28: Poster

Mittwoch, 11. März 2020, 16:30–18:30, Empore Lichthof

A low-cost high-finesse scanning cavity for frequency stabilization of a Ba⁺ laser cooling system — •Kai Lok Lam, Daniel Hönig, Fabian Thielemann, Pascal Weckesser, Leon Karpa, and Tobias Schätz — Albert-Ludwigs Universität Freiburg

For most applications in atomic- and molecular physics, lasers at several different wavelenghts are needed. High finesse scanning cavities offer the possibility to transfer the stability of a reference laser to a multitude of other lasers simultaneously. In our setup, we currently aim to use a scanning cavity to transfer the stability of a 650nm laser, that is locked to a Doppler-free spectroscopy of idoine, upon a laser operating at 493nm. These two lasers are used for Doppler-cooling Ba⁺-ions for our experiments investigating ultracold collisions with Li or Rb atoms.

In this poster, we present our realization of a home-built high-finesse scanning cavity. We show our setup, including the assembly of the cavity itself as well as the signal processing.