Self-collimated beams in 2D complex periodic lattices from P- to PT-symmetry
Document typeConference report
Rights accessOpen Access
We analyze self-collimation in two-dimensional periodic complex lattices. We consider P-symmetric and PT-symmetric complex lattices with different geometries, where the periodic modulations of both refractive index and gain-loss are either in-phase, or dephased a quarter of wavelength of the modulation. The non-diffractive propagation of light beams is analytically predicted using coupled mode approach and further confirmed by numerical integration of a paraxial model.
CitationAhmed, W., Botey, M., Herrero, R., Staliunas, K. Self-collimated beams in 2D complex periodic lattices from P- to PT-symmetry. A: International Congress on Engineered Material Platforms for Novel Wave Phenomena. "11th International Congress on Engineered Materials Platforms for Novel Wave Phenomena (Metamaterials), Marseille, France: 28-31 Aug 2017.". 2017, p. 4-6.