Ultrafast Pulse Generation in an Organic Nanoparticle-Array Laser

Konstantinos S. Daskalakis*, Aaro I. Väkeväinen, Jani Petri Martikainen, Tommi K. Hakala, Päivi Törmä

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)
170 Downloads (Pure)


Nanoscale coherent light sources offer potentially ultrafast modulation speeds, which could be utilized for novel sensors and optical switches. Plasmonic periodic structures combined with organic gain materials have emerged as promising candidates for such nanolasers. Their plasmonic component provides high intensity and ultrafast nanoscale-confined electric fields, while organic gain materials offer fabrication flexibility and a low acquisition cost. Despite reports on lasing in plasmonic arrays, lasing dynamics in these structures have not been experimentally studied yet. Here we demonstrate, for the first time, an organic dye nanoparticle-array laser with more than a 100 GHz modulation bandwidth. We show that the lasing modulation speed can be tuned by the array parameters. Accelerated dynamics is observed for plasmonic lasing modes at the blue side of the dye emission.

Original languageEnglish
Pages (from-to)2658-2665
Number of pages8
JournalNano Letters
Issue number4
Publication statusPublished - 11 Apr 2018
MoE publication typeA1 Journal article-refereed

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  • Projects

    OPLD: Organic Polariton Laser Diode

    Daskalakis, K.


    Project: EU: Framework programmes funding



    Anna Rissanen (Manager)

    Aalto University

    Facility/equipment: Facility

  • Science-IT

    Mikko Hakala (Manager)

    School of Science

    Facility/equipment: Facility

  • Press / Media

    Ultrafast laser pulse created by golden nanoparticles

    Konstantinos Daskalakis


    6 items of Media coverage

    Press/Media: Media appearance

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