Aufsatz in einer Fachzeitschrift
Strong-field control landscapes of coherent electronic excitation



Details zur Publikation
Autor(inn)en:
Bayer, T.; Wollenhaupt, M.; Baumert, T.
Publikationsjahr:
2008
Zeitschrift:
J. Phys. B., Special Issue on Coherent Control
Seitenbereich:
074007-1 - 074007-13
Jahrgang/Band:
41

Zusammenfassung, Abstract
We report on physical mechanisms behind resonant strong-field coherent control. To this end, we study multi-photon ionization of potassium atoms using intense shaped femtosecond laser pulses. The measured photoelectron spectra are discussed in terms of selective population of dressed states ( SPODS). A physically motivated pulse parameterization is introduced which opens up two-dimensional parameter spaces comprising pulse sequences as well as chirped pulses. The control topologies of these subspaces are mapped out experimentally and are presented in the form of strong-field control landscapes ( SFCLs). In the SFCLs, complementary realizations of SPODS via photon locking and rapid adiabatic passage are observed. Moreover, the combined effect, termed Multi-RAP, arises when both mechanisms are at play simultaneously. In order to better understand the performance of adaptive optimization procedures, we experimentally study their capability to find optimal solutions on a given parameter space. The evolution of different optimization procedures is visualized by means of control trajectories on the surface of the measured SFCL.


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Zuletzt aktualisiert 2019-01-11 um 16:04