| Títol: | Gain/loss periodic spatial modulated materials on a wavelength scale |
| Autor: | Staliunas, Kestutis
Herrero Simon, Ramon
Vilaseca Alavedra, Ramon |
| Altres autors/autores: | Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear |
| Editorial: | IEEE Press. Institute of Electrical and Electronics Engineers |
| Matèries: | Àrees temàtiques de la UPC::Enginyeria electrònica i telecomunicacions::Telecomunicació òptica
Photonic crystals
Llum -- Propagació |
| Tipus de document: | Conference report |
| Descripció: | We predict self-collimation and superdiffusion of light propagating in materials with periodically modulated
gain/loss profile. The modulation is parallel and transverse to the light propagation direction and its periodicity is
on the wavelength scale. The self-collimation (or diffraction-free propagation) of the beams is found, which is
similar to that observed in photonic crystals. The superdiffusion is also predicted, which means a dependence of
the beam amplification on the propagation direction, which results in the spatial frequency filtering of the beams.
We justify the predictions by the numerical simulations of the paraxial wave propagation equations. |
| Altres identificadors i accés: | Staliunas, K.; Herrero, R.; Vilaseca, R. Gain/loss periodic spatial modulated materials on a wavelength scale. A: International Conference on Transparent Optical Networks. "11th International Conference on Transparent Optical Networks, 2009". Sao Miguel (Azores): IEEE Press. Institute of Electrical and Electronics Engineers, 2009, p. 687-690.
978-1-4244-4826-5
http://hdl.handle.net/2117/7292
IEEE Catalog Number: CFP09485-CDR |
| Disponible al dipòsit: | E-prints UPC
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