Laboratory Graduate Fellowship Program, 1989. Appendix E
Abstract
Abstract of Dissertation: Electromagnetic Excitations on Antiferromagnets: Surface Polaritons and Leaky Waves. Surface polaritons exist at frequencies between 250 GHz and a few THz when propagating on antiferromagnets. They have been predicted theoretically and observed recently on MnF2 in reflection measurements. Although damping is necessary for coupling between the surface polariton modes and incident light waves, theoretical studied have not examined the effect of damping on the surface polariton modes. An analysis of the surface polariton modes, with damping, is done by solving the dispersion equation and by studying the classical electromagnetic Green's functions for a semi-infinite antiferromagnet. Sodium Lidar Studies of the Horizontal Variability of Gravity Waves in the Mesosphere: A data analysis technique for determining gravity wave intrinsic parameters is presented. The intrinsic parameters include the horizontal and vertical wavelengths, period, and wave propagation direction. The technique involves measuring the altitude variations of the wave induced density perturbations in the mesospheric Na layer. Lattice Structures in the Image Algebra and Applications to Image Processing; The research is concerned with the investigation of an algebraic structure, known as image algebra, which is used for expressing algorithms in image processing.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1989
- Accession Number
- ADA223722
Entities
People
- Claude Cavender
- Rodney C. Darrah
Organizations
- Universal Energy Systems