E. Toussaere

Summary from only given. We present two types of new polymeric materials for organic device applications. From a novel synthesis route employing polycondensation we obtain an improved quality of MEH-PPV and use this /spl pi/-conjugated polymer as the active laser medium in a first-order DFB-laser. We also show a novel-type deep-UV photo-polymer, poly(styrene-co-4-vinylbenzylthio-cyanate) (PST-co-VBT) compatible with UV-lithography.

We report an optical written distributed feedback (DFB) structure with broadly and continuously tunable mode emission (Δλ=30 nm) based on polycondensation-type poly[2methoxy-5-(2-ethylhexyloxy)-1,4-phenylene-vinylene] (MEH–PPV). In a Lloyd-mirror configuration we realize first-order feedback by dynamic photoinduced in-plane gratings, which can also be imprinted permanently. This technique is a versatile fabrication tool for polymeric DFB laser structures while also providing an efficient method to probe the lasing performance of organic solid-state laser materials. Furthermore, features of the photoinduced absorption spectra of improved MEH–PPV indicate favorable material properties towards further homopolymer solid-state laser applications.