Numéro
J. Phys. II France
Volume 2, Numéro 4, April 1992
Page(s) 621 - 629
DOI https://doi.org/10.1051/jp2:1992151
DOI: 10.1051/jp2:1992151
J. Phys. II France 2 (1992) 621-629

Interaction of three-level atoms with stochastic fields

M. A. Bouchene1, A. Débarre1, J.-C. Keller1, J.-L Le Gouët1, P. Tchénio1, V. Finkelstein2 and P. R. Berman2

1  Laboratoire Aimé Cotton, Bâtiment 505, 91405 Orsay Cedex, France
2  Physics Department, New York University, 4 Washington Place, New york, NY 10003, U.S.A.

(Received 30 October 1991, accepted 10 January 1992)

Abstract
Three broadband laser pulses are used to drive transitions between three levels in Sr vapor. A four-wave mixing signal is monitored as a function of the delay time t12 between two of the pulses. For sufficiently strong fields, it is found that the signal, as a function of t12, can possess a dip or a spike which is narrower than the correlation time of the radiation fields. A theoretical interpretation of the results is presented in terms of the so-called dark resonance.

PACS
42.55 - 42.60 - 32.90

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