Abstract

Experimental investigations have been undertaken of some aspects of the propagation of helium–neon gas laser radiation at λ = 0.63 μ for different scattering media (artificial water fogs, wood smokes, model media). It has been shown that the attenuation coefficients practically coincide when coherent and incoherent radiation is scattered. The applicability limits of Bouguer-Beer’s law for describing the attenuation of radiation in scattering media are investigated and the intensity of multiple forward-scattered light for different geometrical parameters of the source and radiation receiver are measured. The applicability of single scattering theory formulas for describing forward-scattered light intensity are discussed.

© 1969 Optical Society of America

Off-axis multiple scattering of a laser beam in turbid media: comparison of theory and experiment

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