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arXiv · 1909.11631

Acetylene-based frequency stabilization of a laser system for potassium laser cooling

Charbel Cherfan·Isam Manai·Samir Zemmouri·Jean-Claude Garreau·Jean-Francois Clement·Pascal Szriftgiser·Radu Chicireanu
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Abstract

We demonstrate a laser frequency stabilization technique for laser cooling of Potassium atoms, based on saturated absorption spectroscopy in the C-Band optical telecommunication window, using ro-vibrationel transitions of the acetylene molecule ($12$C$_2$H$_2$). We identified and characterized several molecular lines, which allow to address each of the potassium D2 (767 nm) and D1 (770 nm) cooling transitions, thanks to a high-power second harmonic generation (SHG) stage. We successfully used this laser system to cool the $^{41}$K isotope of potassium in a 2D-3D Magneto-Optical Traps setup.

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Charbel Cherfan, Isam Manai, Samir Zemmouri, Jean-Claude Garreau, Jean-Francois Clement, Pascal Szriftgiser, Radu Chicireanu. 2019-09-25. Acetylene-based frequency stabilization of a laser system for potassium laser cooling. https://doi.org/10.1364/oe.28.000494

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