What is the unit cell attribute for in PropCalc?
To perform a PropCalc analysis, a unit cell must be defined; this definition explicitly gives the periodicities along the x and y directions and the finite height along z (propagation is always assumed along x, and the structure is considered finite along z). By defining a rectangular solid and attributing it as a unit cell, the rectangular solids dimensions give the periodicities and extent along z. By defining a dielectric constant other than unity, a non-unity background dielectric can be entered.
