Inside Front Cover: An Ultraviolet Organic Thin‐Film Solid‐State Laser for Biomarker Applications (Adv. Mater. 1/2005)

Thin-film organic solid-state lasers operating in the ultraviolet wavelength region are fabricated using a novel spiro-linked material as active organic layer in an optically pumped distributed feedback (DFB) structure in work reported by Riedl and co-workers on p. 31. The laser wavelength is tunable between 377.7 nm and 395 nm, the shortest laser wavelength reported so far for thin-film organic solid-state lasers. The lasers' suitability for spectroscopic applications was tested by use as an excitation source for solutions containing the common fluorescent dyes Coumarin 6, Coumarin 152, and Rhodamine 6G.