Doctoral Dissertations


Paper 1: “Surface electromagnetic wave (SEW) dispersion curves are usually calculated using a simple equation derived from Maxwell’s equations and boundary conditions. When complex dielectric functions are used for the two media, the component of the propagation vector along the surface kx becomes infinite as the frequency ω approaches the surface polariton frequency ωs if ω is considered complex and kx real. On the other hand, if kx is considered complex and ω real, the dispersion curves bend back toward smaller kx as ω approaches ωs. We have previously demonstrated that both types of dispersion curves can be obtained from attenuated total reflection measurements of silver. We now extend this result to other materials and show that dispersion curves alone present an inadequate summary of the data"--Abstract, page 1.

Paper 2: “The technique of plotting the ATR reflectance as a function of both frequency and incident angle using a three dimensional plot is applied to surface electromagnetic waves (SEW) in a uniaxial material, MnF2. It is shown that dispersion curves calculated without absorption do not completely describe the ATR reflectivity. Experimental data confirming the reflectance surface features are presented. The termination of an extraordinary SEW dispersion branch is observed experimentally, and the experimental conditions for this observation are discussed. Also, additional minima in the reflectance surface not associated with SEW are found"--Abstract, page 1.


Alexander, Ralph William, Jr.

Committee Member(s)

Levenson, L. L., 1928-1998
Bell, Robert John, 1934-
Long, Gary J., 1941-
Peacher, Jerry



Degree Name

Ph. D. in Physics


In addition, the following publications are submitted in partial fulfillment of the Ph.D. degree and may be found elsewhere:

"Surface Excitations in Absorbing Media", R. J. Bell, R. W. Alexander, Jr., W. F. Parks, and G. Kovener, Optics Comm. 8, 147 (1973).

"Dispersion Curves for Surface Electromagnetic Waves with Damping", R. W. Alexander, G. S. Kovener, and R. J. Bell, Phys. Rev. Lett. 32, 154 (1974).


University of Missouri--Rolla

Publication Date


Journal article titles appearing in thesis/dissertation

  • ATR reflectivity study of surface electromagnetic waves with damping
  • ATR reflectivity study of surface electromagnetic waves on anisotropic materials with damping


81 pages in various pagings

Note about bibliography

Includes bibliographical references.


© 1974 Gary Shannon Kovener, All rights reserved.

Document Type

Dissertation - Open Access

File Type




Subject Headings

Electromagnetic waves -- Mathematical models
Electromagnetic surface waves

Thesis Number

T 3001

Print OCLC #


Electronic OCLC #


Included in

Physics Commons