In this paper, control of the evolution of a two electron wave packet through the application of a static electric field is demonstrated. Specifically, application of a small electric field is used to produce pulsed autoionization events, the timing of which can be controlled on a picosecond time scale. The technique is demonstrated by exciting calcium atoms using a short-pulsed laser to the 4p3/219d doubly excited state, which is energy degenerate with the 4p1/2nk stark states. Evolution of the resultant wave packet is monitored through the application of a second short laser pulse, which stimulates the atoms to emit a photon producing singly excited Rydberg states which are detected using field ionization.
J. G. Story and H. N. Ereifej, "Electric Field Controlled, Pulsed Autoionization in Two Electron Wave Packets," Physical Review Letters, vol. 86, no. 4, pp. 612-615, American Institute of Physics (AIP), Jan 2001.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevLett.86.612
Keywords and Phrases
Calcium; Electric field effects; Electron transitions; Electronic density of states; Electrons; Energy gap; Numerical methods; Oscillations; Photons; Pulsed laser applications; Quantum theory; Pulse autoionization; Quantum defect theory; Rydberg states; Stark states; Two electron wave packets; Ionization
International Standard Serial Number (ISSN)
Article - Journal
© 2001 American Institute of Physics (AIP), All rights reserved.