SPASER as a complex system: femtosecond dynamics traced by ab-initio simulations

Handle URI:
http://hdl.handle.net/10754/619757
Title:
SPASER as a complex system: femtosecond dynamics traced by ab-initio simulations
Authors:
Gongora, J. S. Totero ( 0000-0003-2300-4218 ) ; Miroshnichenko, Andrey E.; Kivshar, Yuri S.; Fratalocchi, Andrea ( 0000-0001-6769-4439 )
Abstract:
Integrating 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.
KAUST Department:
PRIMALIGHT Research Group
Citation:
Juan 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
Journal:
Ultrafast Phenomena and Nanophotonics XX
Conference/Event name:
Ultrafast Phenomena and Nanophotonics XX
Issue Date:
14-Mar-2016
DOI:
10.1117/12.2212967
Type:
Conference Paper
Sponsors:
For 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.
Additional Links:
http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2212967
Appears in Collections:
Conference Papers

Full metadata record

DC FieldValue Language
dc.contributor.authorGongora, J. S. Toteroen
dc.contributor.authorMiroshnichenko, Andrey E.en
dc.contributor.authorKivshar, Yuri S.en
dc.contributor.authorFratalocchi, Andreaen
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/10.1117/12.2212967en
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.en
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.en
dc.relation.urlhttp://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2212967en
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.en
dc.titleSPASER as a complex system: femtosecond dynamics traced by ab-initio simulationsen
dc.typeConference Paperen
dc.contributor.departmentPRIMALIGHT Research Groupen
dc.identifier.journalUltrafast Phenomena and Nanophotonics XXen
dc.conference.dateFebruary 13, 2016en
dc.conference.nameUltrafast Phenomena and Nanophotonics XXen
dc.conference.locationSan Francisco, California, United Statesen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionNonlinear Physics Centre, Australian National University, Canberra ACT 2601, Australia.en
kaust.authorGongora, J. S. Toteroen
kaust.authorFratalocchi, Andreaen
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