Subdiffraction and spatial filtering due to periodic spatial modulation of the gain/loss profile
Optics
2008-11-27 v1
Abstract
We investigate light propagation through materials with periodically modulated gain/loss profile in both transverse and longitudinal directions, i.e. in material with two-dimensional modulation in space. We predict effects of self-collimation (diffraction-free propagation) of the beams, as well as superdiffusion (spatial frequency filtering) of the beams in depending on the geometry of the gain/loss lattice, and justify the predictions by numerical simulations of the paraxial wave propagation equations.
Keywords
Cite
@article{arxiv.0811.4419,
title = {Subdiffraction and spatial filtering due to periodic spatial modulation of the gain/loss profile},
author = {K. Staliunas and R. Herrero and R. Vilaseca},
journal= {arXiv preprint arXiv:0811.4419},
year = {2008}
}