Physics of ultra cold atoms and their applications

Study of saturated-absorption resonances on the ³P_0,1,2 – ³D_1,2,3 transitions of magnesium atoms in a hollow-cathode discharge cell

A. N. Goncharov^abc, O. A. Klimacheva^ac, A. O. Mel'nikova<sup>c

a</sup> Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
^b Novosibirsk State University
^c Novosibirsk State Technical University

Abstract: The saturated-absorption resonances on the ³P_0,1,2 – ³D_1,2,3 transitions of magnesium atoms in a hollow-cathode discharge cell are studied. The line width (FWHM) for the observed saturated-absorption resonance on the 3³P₀ → 3³D₁ transition turns out to be ~220 MHz. Experiments are performed using a system based on a 766-nm diode laser with amplification and frequency doubling in a nonlinear BiBO crystal. The results obtained are of interest for sub-Doppler cooling on the 3³P₂ → 3³D₃ transition.

Keywords: laser cooling, magnesium, frequency standards, saturated-absorption spectroscopy.

Received: 11.03.2020
Revised: 02.04.2020

 English version: Quantum Electronics, 2020, 50:6, 561–565

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