2004/12/07 by A. Ciarkowski
Physics and Astronomy · #physics.optics
published as Archives of Acoustics, 27, 4, 339-349 (2002) · 12 pages, 4 figures
arxiv created 2004/12/07 · arxiv updated 2009/12/01
Evolution of the main signal in a Lorentz dispersive medium is considered. The signal propagating in the medium is excited by a sine-modulated pulse signal, with its envelope described by a hyperbolic tangent function. Both uniform and non-uniform asymptotic representations for the signal are found. It is shown when the uniform representation can be reduced to the non-uniform one. The results obtained are illustrated with a numerical example.