A self-stabilized coherent phonon source driven by optical forces
Navarro Urrios, Daniel (Institut Català de Nanociència i Nanotecnologia)
Capuj, Nestor Eduardo (Universidad de La Laguna)
Gomis-Bresco, Jordi (Institut Català de Nanociència i Nanotecnologia)
Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia)
Pitanti, A. (NEST, Istituto Nanoscienze)
Griol, Amadeu (Universidad Politécnica de Madrid)
Martínez, Alejandro (Universidad Politécnica de Madrid)
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia)

Date:	2015
Abstract:	We report a novel injection scheme that allows for phonon lasing in a one-dimensional opto-mechanical photonic crystal, in a sideband unresolved regime and with cooperativity values as low as 10'2. It extracts energy from a cw infrared laser source and is based on the triggering of a thermo-optical/free-carrier-dispersion self-pulsing limit-cycle, which anharmonically modulates the radiation pressure force. The large amplitude of the coherent mechanical motion acts as a feedback that stabilizes and entrains the self-pulsing oscillations to simple fractions of the mechanical frequency. A manifold of frequency-entrained regions with two different mechanical modes (at 54 and 122MHz) are observed as a result of the wide tuneability of the natural frequency of the self-pulsing. The system operates at ambient conditions of pressure and temperature in a silicon platform, which enables its exploitation in sensing, intra-chip metrology or time-keeping applications.
Grants:	European Commission 233883 European Commission 321122 Ministerio de Economía y Competitividad MAT2012-31392
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:	Nanophotonics and plasmonics ; Photoacoustics
Published in:	Scientific reports, Vol. 5 (October 2015) , art. 15733, ISSN 2045-2322

DOI: 10.1038/srep15733
PMID: 26503448

7 p, 885.0 KB

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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