Plexcitonic crystals: a tunable platform for light-matter interactions
Optical Society of America
Karademir, E., Balci, S., Kocabas, C., & Aydinli, A. (2014). Plexcitonic crystals: a tunable platform for light-matter interactions. Optics express, 22(18), 21912-21920.
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/12466
Coupled states of surface plasmon polaritons (SPPs) and excitons are collectively called plexcitons [Nano Lett. 8, 3481 (2008)]. Plexcitonics is an emerging field of research aiming to control light-matter interaction at the nanometer length scale using coupled pairs of surface-plasmons and excitons. Ability to control the interaction between localized excitons and propagating surface-plasmons is important for realization of new photonic devices. In this letter, we report plexcitonic crystals that yield direction-dependent plasmon-exciton coupling. We have fabricated one- and two-dimensional plexcitonic crystals on periodically corrugated silver surfaces, which are loaded with J-aggregate complexes. We show that plasmon-exciton coupling is blocked for some crystal directions when exciton energy falls inside the plasmonic band gap of the periodically corrugated metallic surface. (C) 2014 Optical Society of America
- Department of Physics