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Interaction of a Short-Pulse Laser of a Gaussian Temporal Profile with an Inhomogeneous Medium

Transport of a short-pulse laser in an inhomogeneous planar participating medium is investigated. The pulse is a Gaussian function in time. Discrete as well as continuous variations in the scattering albedo across the layers are considered to be the cause of inhomogeneties in the absorbing-scattering medium. Optical depths of different layers too are considered different. The finite volume method is used to analyze the problem. Transmittance and reflectance signals are studied for different situations. Characteristic signals are obtained for specific inhomogeneties in the medium.