Browsing by Author "XX676829"
Now showing items 120 of 69

Alloptical switching and amplification of discrete vector solitons in nonlinear cubic birefringent waveguide arrays
Vicencio Poblete, Rodrigo; Molina Gálvez, Mario; Kivshar, Yuri S. (2004)We study alloptical switching based on the dynamic properties of discrete vector solitons in waveguide arrays. We employ the concept of polarization mode instability and demonstrate simultaneous switching and amplification ... 
Analysis and Projections of Physics in Chile
Soto, Leopoldo; Zambra, Marcelo; Loewe, Marcelo; Gutiérrez Gallardo, Gonzalo; Molina Gálvez, Mario; Barra de la Guarda, Felipe; Lund Plantat, Fernando; Saavedra, Carlos; Haberle, Patricio (Institute of Physics (IoP), 2008)In the present work, an assessment of the Physics research capacity in Chile is presented. For this, the period between 2000 and June 2005 has been studied. In this period almost 200 physicists have contributed to ... 
Anderson localization in a periodic photonic lattice with a disordered boundary
Naether, U.; Meyer, J. M.; Stützer, S.; Tünnermann, A.; Nolte, S.; Molina Gálvez, Mario; Szameit, A. (OPTICAL SOC AMER, 20120215)We investigate experimentally the light evolution inside a twodimensional finite periodic array of weakly coupled optical waveguides with a disordered boundary. For a completely localized initial condition away from the ... 
Boundaryinduced Anderson localization in photonic lattices
Molina Gálvez, Mario (2011)We analyze numerically localization of light in linear square waveguide arrays restricted in one dimension ("ribbons"), whose boundaries are disordered in propagation constant and/or coupling. We find that the disordered ... 
Bounded dynamics in finite PT symmetric magnetic metamaterials
Molina Gálvez, Mario (American Physical Society, 2014)We examine the PTsymmetrybreaking transition for amagnetic metamaterial of a finite extent, modeled as an array of coupled splitring resonators in the equivalent circuit model approximation. Smallsize arrays are ... 
Breathers inonedimensional binary metamaterial models
Lazarides, N.; Molina Gálvez, Mario; Tsironis, G. P. (ELSEVIER SCIENCE BV, 20100715)The existenceandstabilityofdiscretebreathersisstudiedtheoreticallyforamodelmagnetic metamaterialcomposedofaperiodicbinaryarrayofsplitringresonatorswithresonancefrequency mismatch.Itisdemonstratedthatbreatherscanbeexci ... 
Bulk and surface bound states in the continuum
Gallo, N.; Molina Gálvez, Mario (IOP Publisihing, 2015)We examine bulk and surface bound states in the continuum (BIC), that is, squareintegrable, localized modes embedded in the linear spectral band of a discrete lattice including interactions to first and second nearest ... 
Bulk and surface localized modes on a magnetic nonlinear impurity
Molina Gálvez, Mario (ELSEVIER, 20081117)We study localized modes on a single magnetic impurity positioned in the bulk or at the surface of a onedimensional chain, in the presence of a magnetic field 8 acting at the impurity site. The strong onsite nonlinear ... 
Bulk and surface magnetoinductive breathers in binary metamaterials
Molina Gálvez, Mario; Lazarides, N.; Tsironis, G. P. (2009)We investigate theoretically the existence of bulk and surface discrete breathers in a onedimensional magnetic metamaterial comprised of a periodic binary array of splitring resonators; the two types of resonators used ... 
Compact modes in quasi one dimensional coupled magnetic oscillators
López González, Dany; Molina Gálvez, Mario (IOP Publishing Ltd., 2017)In this work we study analytically and numerically the spectrum and localization properties of three quasionedimensional (ribbons) splitring resonator arrays which possess magnetic flatbands, namely, the stub, Lieb and ... 
Conductance through a single nonlinear impurity
Molina Gálvez, Mario; Bahlouli, H. (2002)We use the discrete nonlinear Schrödinger (DNLS) equation to describe tunneling through a single magnetic impurity connected to two perfect leads, in the presence of a magnetic field. Due to the presence of a strong onsite ... 
Controlled switching of discrete solitons in waveguide arrays
Vicencio Poblete, Rodrigo; Molina Gálvez, Mario; Kivshar, Yuri S. (Optical Society of America (OSA), 2003)A study was performed on controlled switching of discrete solitons in waveguide arrays. The study involved weak steplike modulation of the coupling strength in the array with the period larger than the waveguide spacing. ... 
Controlling alloptical switching in multicore nonlinear couplers
Castro, F. M.; Molina Gálvez, Mario; Deering, W. D. (ELSEVIER SCIENCE, 20031015)We demonstrate how to improve the switching power and performance of alloptical nonlinear couplers by introducing linear control waveguides. In particular, we demonstrate this idea for a threecore coupler consisting of ... 
Defect Modes, Fano Resonances and Embedded States in Magnetic Metamaterials
Molina Gálvez, Mario (SpringerVerlag Berlin Heidelberg, 2013)We consider a simplified model of a nonlinear magnetic metamaterial, consisting of a weaklycoupled, periodic splitring resonator (SRR) array capable of nonlinear capacitive response. We analyze three related problems: ... 
Dimensional crossover for the BoseEinstein condensation
Molina Gálvez, Mario; Rössler, Jaime (Sociedad Mexicana de Fisica, 1998)We study BoseEinstein condensation (BEC) for a noninteracting gas in a very anisotropic trap. Therefore, at enough small temperatures some degrees of freedom "freeze", thus reducing the "effective" dimensionality of the ... 
Discrete and surface solitons in photonic graphene nanoribbons
Molina Gálvez, Mario; Kivshar, Yuri S. (OPTICAL SOC AMER, 20100901)We analyze localization of light in honeycomb photonic lattices restricted in one dimension, which can be regarded as an optical analog of graphene nanoribbons. We discuss the effect of lattice topology on the properties ... 
Discrete solitons and nonlinear surface modes in semiinfinite waveguide arrays
Molina Gálvez, Mario; Vicencio Poblete, Rodrigo; Kivshar, Yuri S. (OPTICAL SOC AMER, 20060601)We discuss the formation of selftrapped localized states near the edge of a semiinfinite array of nonlinear optical waveguides. We study a crossover from nonlinear surface states to discrete solitons by analyzing the ... 
Discrete surface solitons in semiinfinite binary waveguide arrays
Molina Gálvez, Mario; Garanovich, Ivan L.; Sukhorukov, Andrey A.; Kivshar, Yuri S. (OPTICAL SOC AMER, 20060801)We analyze discrete surface modes in semiinfinite binary waveguide arrays, which can support simultaneously two types of discrete solitons. We demonstrate that the analysis of linear surface states in such arrays provides ... 
Discrete surface solitons in twodimensional anisotropic photonic lattices
Vicencio Poblete, Rodrigo; Flach, Sergej; Molina Gálvez, Mario; Kivshar, Yuri S. (2007)We study nonlinear surface modes in twodimensional anisotropic periodic photonic lattices and demonstrate that, in a sharp contrast to onedimensional discrete surface solitons, the mode threshold power is lower at the ... 
Disorderfree weak dynamic localization in deformable lattices
Savin, Alexander V.; Kivshar, Yuri S.; Molina Gálvez, Mario (Institute of Physics Publishing, 2018)© 2018 IOP Publishing Ltd.We study the electron transport in a deformable lattice modeled in the semiclassical approximation as a discrete nonlinear elastic chain where acoustic phonons are in thermal equilibrium at ...