Scully, Marlan O. Laser Physics, Max Planck Institute of Quantum Optics, Max Planck Society; Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;
Ariunbold, G. O., Sautenkov, V. A., & Scully, M. O. (2011). Switching from a sequential transition to quantum beating in atomic rubidium pumped by a femtosecond laser. Journal of the Optical Society of America B - Optical Physics, 28(3), 462-467. doi:10.1364/JOSAB.28.000462.