Phys. Rev. A 75, 063401 (2007) [8 pages]Transition from weak- to strong-field coherent controlReceived 13 December 2006; published 1 June 2007 We trace out the transition from weak- to strong-field coherent control, focusing on multiphoton population transfer in atomic sodium. We show how dynamic Stark shifts and ground-state depletion mark the departure from perturbative to strong-field excitation, and how a time-domain picture yields insight into the dynamics when a static resonance, frequency-domain approach breaks down. Experimental measurements are interpreted with the help of calculations that numerically integrate the Schrödinger equation. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.75.063401
DOI:
10.1103/PhysRevA.75.063401
PACS:
32.80.Qk
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