Ink-jet-printed organic semiconductor distributed feedback laser

Xin Liu, Sönke Klinkhammer, Kai Sudau, Norman Mechau, Christoph Vannahme, Johannes Kaschke, Timo Mappes, Martin Wegener, Uli Lemmer

Research output: Contribution to journalJournal articleResearchpeer-review


Ink-jet-printed organic distributed feedback (DFB) lasers are realized by employing light-emitting copolymer and suitable organic solvents to meet
the demands of printability and optical amplification in a nanopatterned conjugated polymer slab waveguide. We demonstrate the accurate lateral
positioning of ink-jet-printed patches of the gain material on a polymer substrate with 500 500 m2 grating areas. We also printed patches of
large lateral dimension of 6mm2 on a silica grating. The high uniformity of the film thickness leads to a laser wavelength variation of less than 3 nm
over the whole area.
Original languageEnglish
JournalApplied Physics Express
Number of pages3
Publication statusPublished - 2012
Externally publishedYes


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