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dc.contributor.authorGongora, J. S. Totero
dc.contributor.authorMiroshnichenko, Andrey E.
dc.contributor.authorKivshar, Yuri S.
dc.contributor.authorFratalocchi, Andrea
dc.date.accessioned2016-09-04T07:09:16Z
dc.date.available2016-09-04T07:09:16Z
dc.date.issued2016-03-14
dc.identifier.citationJuan Sebastian Totero Gongora ; Andrey E. Miroshnichenko ; Yuri S. Kivshar and Andrea Fratalocchi " SPASER as a complex system: femtosecond dynamics traced by ab-initio simulations ", Proc. SPIE 9746, Ultrafast Phenomena and Nanophotonics XX, 974618 (March 14, 2016); doi:10.1117/12.2212967; http://dx.doi.org/10.1117/12.2212967
dc.identifier.doi10.1117/12.2212967
dc.identifier.urihttp://hdl.handle.net/10754/619757
dc.description.abstractIntegrating coherent light sources at the nanoscale with spasers is one of the most promising applications of plasmonics. A spaser is a nano-plasmonic counterpart of a laser, with photons replaced by surface plasmon polaritons and the resonant cavity replaced by a nanoparticle supporting localized plasmonic modes. Despite the large body of experimental and theoretical studies, the understanding of the fundamental properties of the spaser emission is still challenging. In this work, we investigated the ultrafast dynamics of the emission from a core-shell spaser by developing a rigorous first-principle numerical model. Our results show that the spaser is a highly nonlinear system with many interacting degrees of freedom, whose emission sustain a rich manifold of different spatial phases. In the regime of strong interaction we observed that the spaser emission manifests an irreversible ergodic evolution, where energy is equally shared among all the available degrees of freedom. Under this condition, the spaser generates ultrafast vortex lasing modes that are spinning on the femtosecond scale, acquiring the character of a nanoparticle with an effective spin. Interestingly, the spin orientation is defined by spontaneous symmetry breaking induced by quantum noise, which is a fundamental component of our ab-initio model. This opens up interesting possibilities of achieving unidirectional emission from a perfectly spherical nanoparticle, stimulating a broad range of applications for nano-plasmonic lasers as unidirectional couplers, random information sources and novel form of photonics neural-networks. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
dc.description.sponsorshipFor the computer time, we have used the resources of the KAUST Supercomputing Laboratory. This work is part of the research program of Kaust "Optics and plasmonics for efficient energy harvesting" (Award No. CRG-1-2012-FRA-005) and it was also supported by the Australian Research Council.
dc.publisherSPIE-Intl Soc Optical Eng
dc.relation.urlhttp://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2212967
dc.rightsCopyright 2016 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
dc.titleSPASER as a complex system: femtosecond dynamics traced by ab-initio simulations
dc.typeConference Paper
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentPRIMALIGHT Research Group
dc.identifier.journalUltrafast Phenomena and Nanophotonics XX
dc.conference.dateFebruary 13, 2016
dc.conference.nameUltrafast Phenomena and Nanophotonics XX
dc.conference.locationSan Francisco, California, United States
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionNonlinear Physics Centre, Australian National University, Canberra ACT 2601, Australia.
kaust.personGongora, J. S. Totero
kaust.personFratalocchi, Andrea
kaust.grant.numberCRG-1-2012-FRA-005)
refterms.dateFOA2018-06-13T12:05:21Z
kaust.acknowledged.supportUnitSupercomputing Laboratory
kaust.acknowledged.supportUnitSupercomputing Laboratory


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