Nonlinear dynamics and chaos in an optomechanical beam
Navarro Urrios, Daniel (Institut Català de Nanociència i Nanotecnologia)
Capuj, Nestor Eduardo (Universidad de La Laguna)
Colombano Sosa, Martin (Institut Català de Nanociència i Nanotecnologia)
García Fernández, Pedro David (Institut Català de Nanociència i Nanotecnologia)
Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia)
Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia)
Griol, Amadeu (Universidad Politécnica de Madrid)
Martínez, Alejandro (Universidad Politécnica de Madrid)
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia)

Date:	2017
Abstract:	Optical nonlinearities, such as thermo-optic mechanisms and free-carrier dispersion, are often considered unwelcome effects in silicon-based resonators and, more specifically, optomechanical cavities, since they affect, for instance, the relative detuning between an optical resonance and the excitation laser. Here, we exploit these nonlinearities and their intercoupling with the mechanical degrees of freedom of a silicon optomechanical nanobeam to unveil a rich set of fundamentally different complex dynamics. By smoothly changing the parameters of the excitation laser we demonstrate accurate control to activate two- A nd four-dimensional limit cycles, a period-doubling route and a six-dimensional chaos. In addition, by scanning the laser parameters in opposite senses we demonstrate bistability and hysteresis between two- A nd four-dimensional limit cycles, between different coherent mechanical states and between four-dimensional limit cycles and chaos. Our findings open new routes towards exploiting silicon-based optomechanical photonic crystals as a versatile building block to be used in neurocomputational networks and for chaos-based applications.
Grants:	European Commission 713450 Ministerio de Economía y Competitividad FIS2015-70862-P Ministerio de Economía y Competitividad RYC-2014-15392
Note:	Altres ajuts: Beatriu de Pinos postdoctoral fellowship (BP-DGR 2015)
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Nonlinear phenomena ; Optomechanics ; Photonic crystals
Published in:	Nature communications, Vol. 8 (April 2017) , art. 14965, ISSN 2041-1723

DOI: 10.1038/ncomms14965
PMID: 28397813

10 p, 2.8 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles