Optical precursors in transparent media

Details Optical precursors in transparent media Optical precursors in transparent media

2009-01-27

arxiv.org/abs/0901.4155v2

Physical Review A: Atomic, Molecular and Optical Physics 80 (2009) 011803(R)

Physics

Optics

Scientific paper

10.1103/PhysRevA.80.011803

We theoretically study the linear propagation of a stepwise pulse through a dilute dispersive medium when the frequency of the optical carrier coincides with the center of a natural or electromagnetically induced transparency window of the medium (slow-light systems). We obtain fully analytical expressions of the entirety of the step response and show that, for parameters representative of real experiments, Sommerfeld-Brillouin precursors, main field and second precursors "postcursors" can be distinctly observed, all with amplitudes comparable to that of the incident step. This behavior strongly contrasts with that of the systems generally considered up to now.

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