Phys. Rev. A 79, 011802(R) (2009) [4 pages]Two-way transparency in the light-matter interaction: Optical precursors with electromagnetically induced transparency
We theoretically study classical step-modulated pulse propagation in an optically thick medium with electromagnetically induced transparency (EIT) using a fast Fourier transform and a proposed hybrid-asymptotic analysis. The 100% transmitted leading edge traveling at c consists of Sommerfeld-Brillouin precursors. The main signal, falling inside of the narrow EIT window, experiences a steep dispersion and slow group velocity. We suggest active control of the precursors and main signal separately by adjusting the parameters of the medium and incident pulse. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.79.011802
DOI:
10.1103/PhysRevA.79.011802
PACS:
42.50.Gy, 42.50.Nn, 42.25.Bs
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