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APS » Journals » Phys. Rev. Lett. » Volume 74 » Issue 13
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Phys. Rev. Lett. 74, 2431–2434 (1995)

Observation of Autoionization Suppression through Coherent Population Trapping

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N. E. Karapanagioti, O. Faucher, Y. L. Shao, and D. Charalambidis
Foundation for Research and Technology-Hellas, Institute of Electronic Structure and Laser, P.O. Box 1527, 711 10 Heraklion, Crete, Greece

H. Bachau and E. Cormier
Laboratoire de Collisions Atomiques, CNRS-UPR 260, Université Bordeaux I, 351 Cours de Libération, 33405 Talence Cedex, France

Received 4 October 1994; published in the issue dated 27 March 1995

The strong electromagnetic coupling of two autoionizing states is experimentally investigated for the first time and is shown to lead to coherent population trapping resulting in a reduction of the ionization. The experimental observation of partial stabilization is supported by a theoretical analysis which reproduces the modification of the Fano profiles and indicates that the strong coupling of the two states leads to the trapping of the population in the ground state of the atom.

© 1995 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.74.2431
DOI:
10.1103/PhysRevLett.74.2431
PACS:
32.80.Dz
 
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