Light-Triggered Control of Plasmonic Refraction and Group Delay by Photochromic Molecular Switches

Malte Großmann, Alwin Klick, Christoph Lemke, Julian Falke, Maximilian Black, Jacek Fiutowski, Arkadiusz Jaroslaw Goszczak, Elzbieta Sobolewska, Ahnaf Usman Zillohu, Mehdi Keshavarz Hedayati, Horst-Günter Rubahn, Franz Faupel , Mady Elbahri, Michael Bauer

Research output: Contribution to journalJournal articleResearchpeer-review


An interface supporting plasmonic switching is prepared from a gold substrate coated with a polymerfilm doped with photochromic molecular switches. A reversible light-induced change in the surface plasmon polariton dispersion curve of the interface is experimentally demonstrated, evidencing reversible switching of the surface plasmon polariton group and phase velocity. The switching capabilities of the interface are furthermore successfully applied to achieve focus control of a plasmonic lens. The results imply the realization of nonvolatile and reversible plasmonic switching units providing complex functionalities based on surface plasmon refraction and group delay.
Original languageEnglish
JournalACS Photonics
Issue number9
Pages (from-to)1327-1332
Publication statusPublished - 18. Aug 2015


  • active plasmonics
  • plasmonic devices
  • photochromic molecular switches


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