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We describe a method to measure the relaxation rates in Rubidium (Rb) Pulsed Optically Pumped (POP) vapor cell frequency standards. By means of repeated spectroscopy measurements with varying Ramsey time, we show how to extract multiple estimations of the population and coherence relaxation rates of interest, which yields satisfying statistical error. The method can be applied using standard clock spectroscopy methods and equipment.
Lijing Xin, Mark Stephan Widmaier, Ying Xiao, Zhiwei Huang, Antonia Kaiser, André Döring, Robin Carlet, Xinyu Liu, Matthias Hugues Jörg Kockisch
Siara Ruth Isaac, Joelyn de Lima
Pascal Fua, Weizhe Liu, Martin Pierre Engilberge