A method is described to construct modal fields for an arbitrary oneor two-dimensional refractive index structure. An arbitrary starting field is propagated along a complex axis using the slowlyâ€¦ (More)

A method to construct modal fields for an arbitrary oneor two-dimensional intensity dependent refractive index structure is described. An arbitrary starting field is propagated along an imaginaryâ€¦ (More)

The spectroscopic properties of Al2O3:Er thin films have been investigated by lifetime measurements. The luminescence decay curves show an initial non-exponential component, followed by anâ€¦ (More)