Optical pumping in 3He with a laser
نویسندگان
چکیده
2014 Optical pumping of ground state 3He has several peculiar features because nuclear polarization is first obtained in the metastable 2 3S state and then transferred to the ground state (indirect optical pumping); this introduces non-linearities in the equation of evolution of the populations. Here we present a numerical calculation of the kinetics of optical pumping in 3He, which allows a detailed study of the influence of the characteristics of the pumping source (intensity, frequency, polarization). These characteristics can be conveniently varied with a laser, and we describe experiments with a 3He gas at room or low temperatures, and compare the results obtained to the numerical predictions. J. Physique 46 (1985) 2057-2073 DECEMBRE 1985,
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