Two-Dimensional Organic-Exciton Polariton Lattice Fabricated Using Laser Patterning

• DOI: 10.1021/acsphotonics.0c00867
• Publication Date: 2020-07-23T15:19:58Z
• Authors: Rahul Jayaprakash; Charles E. Whittaker; Kyriacos Georgiou; Onkar S. Game; Kirsty E. McGhee; David M. Coles; David G. Lidzey
• Keywords: Exciton-polaritons; Lattice (music)

Exciton-polaritons in 2D lattice geometries now attract considerable attention as systems which to explore new physics. However, such structures are relatively difficult fabricate this can involve sophisticated milling or etching of cavity layers create arrays defects. Here, a straightforward technique is reported that allows rapid fabrication polariton lattices operate at room temperature. Specifically, laser patterning has been used write square defects into sacrificial polymer layer. An organic microcavity structure then built on top the patterned polymer, with morphology propagating through subsequent and spatially modifying optical path length active region. Using real- momentum-space spectroscopy, formation gapped polaritonic band demonstrated The writing approach discussed here opens up way for more complex 2D-lattice studying topological physics