Response of a Two-Level System Driven by Two Strong Fields
- 20 May 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 76 (21) , 3943-3946
- https://doi.org/10.1103/physrevlett.76.3943
Abstract
The absorption and dispersion response of a driven NMR two-level system in diamond is investigated using Raman heterodyne technique for which both pump and probe fields are strong. Up to 11 multiphoton resonances in dispersion and up to three-photon gain without inversion in absorption are observed. These gain features can be attributed to inversion between dressed states. Futhermore, a gain feature for which there is no inversion in either bare or dressed states is observed. The results are in good agreement with calculations.Keywords
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