Poynting's theorem for planes waves at an interface: a scattering matrix approach

Details Poynting's theorem for planes waves at an interface: a scattering matrix approach Poynting's theorem for planes waves at an interface: a scattering matrix approach

2007-07-25

arxiv.org/abs/0707.3841v1

Am. J. Phys. 76 (7), 621-625 (2008)

Physics

Classical Physics

5 pages, 3 figures, submitted to Am. J. Phys

Scientific paper

10.1119/1.2870269

We apply the Poynting theorem to the scattering of monochromatic electromagnetic planes waves with normal incidence to the interface of two different media. We write this energy conservation theorem to introduce a natural definition of the scattering matrix S. For the dielectric-dielectric interface the balance equation lead us to the energy flux conservation which express one of the properties of S: it is a unitary matrix. For the dielectric-conductor interface the scattering matrix is no longer unitary due to the presence of losses at the conductor. However, the dissipative term appearing in the Poynting theorem can be interpreted as a single absorbing mode at the conductor such that a whole S, satisfying flux conservation and containing this absorbing mode, can be defined. This is a simplest version of a model introduced in the current literature to describe losses in more complex systems.

Affiliated with

Also associated with

No associations

Rating

Poynting's theorem for planes waves at an interface: a scattering matrix approach does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Poynting's theorem for planes waves at an interface: a scattering matrix approach, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Poynting's theorem for planes waves at an interface: a scattering matrix approach will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-40355