Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MO: Fachverband Molekülphysik

MO 12: Poster – Cold Atoms and Molecules, Matter Waves (joint session Q/A/MO)

MO 12.24: Poster

Dienstag, 11. März 2025, 14:00–16:00, Tent

Long-term stable laser injection locking for quasi-CW applications — Alexandre de Martino, Florian Kiesel, •Kirill Karpov, Jonas Auch, and Christian Groß — Eberhard Karls Universitaet Tuebingen, Tuebingen, Germany

In our work we present a passive stabilization scheme for injection locking of high-power semiconductor laser diodes, that is generally applicable, technically easy to implement, and extremely cost-effective. It is based on the externally synchronized automatic acquisition of the optimal injection state. Central to our simple but powerful scheme is the management of thermalization effects during lock acquisition. By periodical relocking, spectrally pure amplified light is maintained in a quasi-CW manner over long timescales. We characterize the performance of our method for laser diodes amplifying 671nm light and demonstrate the general applicability by confirming the technique to work also for laser diodes at 401nm, 461nm, and 689nm. Our scheme enables the scaled operation of injection locks, even in cascaded setups, for the distributed amplification of single frequency laser light.

Keywords: quantum gases; ultracold atoms; injection lock