Doppler-free spectroscopy on Cs D${}_1$ line with a dual-frequency laser

Moustafa Abdel Hafiz, Grégoire Coget, Emeric De Clercq +1

We report on Doppler-free laser spectroscopy in a Cs vapor cell using a dual-frequency laser system tuned on the Cs D${}_1$ line. Using counter-propagating beams with crossed linear…