To access the full text documents, please follow this link: http://hdl.handle.net/2117/80912

Title:	Chiral modes in 2D PT-symmetric nanostructures
Author:	Botey Cumella, Muriel; Herrero Simon, Ramon; Turduev, M.; Kurt, H.; Staliunas, Kestutis
Other authors:	Universitat Politècnica de Catalunya. Departament de Física; Universitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers
Abstract:	We propose the stabilization of the output beam of Broad Area Semiconductor (BAS) amplifiers through the introduction of a spatially periodic modulated potential. We show that a periodic modulation of the pump profile in transverse and longitudinal directions, under certain ‘resonance’ condition, can solve two serious problems of BAS amplifiers (and possibly lasers), which are (i) the lack of an intrinsic spatial mode selection mechanism in linear amplification regimes and (ii) the modulation instability (also called Bespalov-Talanov instability) in nonlinear regimes. The elimination of these two drawbacks can significantly improve the spatial quality of the emitted beam in BAS amplifiers.
Subject(s):	-Àrees temàtiques de la UPC::Física::Física de l'estat sòlid::Cristalls -Photonic crystals -PT-symmetry Photonic bandgap materials Photonic Crystal Gain/Loss nanomaterials -Cristalls fotònics
Rights:	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Published version Book Part
Published by:	Springer International Publishing
Share:

Show full item record