On the Calculation of Intensity in Dispersive Inhomogenous Media in the Ray Approximation

Details On the Calculation of Intensity in Dispersive Inhomogenous Media in the Ray Approximation On the Calculation of Intensity in Dispersive Inhomogenous Media in the Ray Approximation

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982rspsa.380..201b&link_type=abstract

Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 380, Issue 1778, pp. 201-209

Physics

Optics

4

Scientific paper

The Hamilton-like equations of geometrical optics determine the rays of the relevant wavefield in the short wavelength limit. It is shown that, by appending a set of subsidiary equations, the associated intensity can be computed along each ray, as the ray itself is traced. The analysis is applicable to any form of wave propagation, and is not confined to optics. It extends to a fully dispersive anisotropic system, some work of P. Ugincius J. acoust. Soc. Am. 45, 193-205, 206-209 (1969) on acoustic propagation (which is not dispersive) in inhomogeneous media.

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