APS » PROLA » Phys. Rev. A » Volume 67 » Issue 4
< Previous article | Next article >

Phys. Rev. A 67, 043810 (2003) [7 pages]

Inhibition of electromagnetically induced absorption due to excited-state decoherence in Rb vapor

Download: PDF (195 kB) or Buy this Article (Use Article Pack) Export: BibTeX or EndNote (RIS)

H. Failache, P. Valente, G. Ban *, V. Lorent †, and A. Lezama ‡
Instituto de Física, Facultad de Ingeniería, Casilla de Correo 30, 11000, Montevideo, Uruguay

Received 8 November 2002; published 15 April 2003

The explanation presented by Taichenachev et al. [Phys. Rev. A 61, 011802 (2000)] according to which the electromagnetically induced absorption (EIA) resonances observed in degenerate two-level systems are due to coherence transfer from the excited to the ground state is experimentally tested in a Hanle-type experiment observing the parametric resonance on the D1 line of 87Rb. While EIA occurs in the F=1→F′=2 transition in a cell containing only Rb vapor, collisions with a buffer gas (30 torr of Ne) cause the sign reversal of this resonance as a consequence of collisional decoherence of the excited state. A theoretical model in good qualitative agreement with the experimental results is presented.


©2003 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.67.043810
DOI: 10.1103/PhysRevA.67.043810
PACS: 42.50.Gy, 32.80.Bx, 03.65.Yz, 34.90.+q

* Permanent address: Laboratoire de Physique Corpusculaire, 14050 Caen, France.
† Permanent address: Laboratoire de Physique des Lasers, 93430 Villetaneuse, France.
‡ Email address: alezama@fing.edu.uy

[ Abstract  |  Previous article  |  Next article  |  Issue 4 ]