Realisation of Transparency below the One-Photon Absorption Level for a Coupling Laser Driving a Lambda System under EIT Conditions
L. Spani Molella, R.-H. Rinkleff and K. Danzmann
Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik
and Institut für Gravitationsphysik, Gottfried Wilhelm Leibniz Universität
Hannover, Callinstr. 38, 30167 Hannover, Germany
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Received: 3 09 2007;
The concept of parametric spectra in electromagnetically induced transparency is clarified. In this context, the possibility for a coupling laser to reach absorption levels below the one-photon absorption is experimentally shown. In this sense, the first results of electromagnetically induced transparency for a coupling laser in a coherent-population-trapping dominated system are presented.
DOI: 10.12693/APhysPolA.112.847
PACS numbers: 42.50.Gy, 42.62.Fi