9 citations · 21 across the 3 of their papers we have counts for
3 papers
Four definitions of magnetic permeability for periodic metamaterials
Johannes Skaar, Hans Olaf Hågenvik, Christopher A. Dirdal
We state and compare four different definitions of magnetic permeability for periodic, artificial media, or metamaterials. The connection between them, and properties in general, a…
Laplace-Fourier analysis and instabilities of a gainy slab
Hans Olaf Hågenvik, Johannes Skaar
The idealization of monochromatic plane waves leads to considerable simplifications in the analysis of electromagnetic systems. However, for active systems this idealization may be…
Fourier theory of linear gain media
Hans Olaf Hågenvik, Markus E. Malema, Johannes Skaar
The analysis of wave propagation in linear, passive media is usually done by considering a single real frequency (the monochromatic limit) and also often a single plane wave compon…