Tunable light-matter hybridization in open organic microcavities

Simon Betzold, Stefanie Herbst, Aurélien A. P. Trichet, Jason M. Smith, Frank Würthner, Sven Höfling, Christof Dietrich

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Open microcavities represent a versatile cavity design that allows the external control of internal properties such as cavity thickness and mode detuning without changing the key parameters of the cavity itself, rendering them particularly interesting for light-matter interaction experiments. Here, we demonstrate the tunability of an open microcavity with an embedded active organic layer providing parallel alignment of molecular transition dipole moments as well as strong self-absorption inside the cavity. By decreasing the cavity thickness, we observe a transition from the weak coupling regime into the strong coupling regime evidenced by the onset of avoided crossing behavior between involved modes. This change of coupling mechanism is shown for 2D (planar) as well as 0D (hemispherical) cavities.
Original languageEnglish
Pages (from-to)90-94
Number of pages5
JournalACS Photonics
Issue number1
Early online date11 Oct 2017
Publication statusPublished - 17 Jan 2018


  • Open microcavity
  • Organic semiconductors
  • Exciton-polaritons


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