title: Simple fabrication of an organic laser by microcontact molding of a distributed feedback grating.
abstract: Lasing from an organic polymer is demonstrated in a device utilizing a distributed feedback (DFB) grating, manufactured by microcontact molding of CdSe nanocrystals (NCs) directly on top of the emitter layer. Besides the simpler fabrication in comparison with a reference device based on a photolithographically prepared DFB grating in a bottom dielectric layer, a much higher DFB strength for NC-gratings is observed, resulting in reduced lasing threshold and a fourfold differential lasing efficiency.
authors: Department of Chemistry, University of Cologne, Luxemburger Str. 116, 50939, Cologne, Germany.
authors: Sergej
authors: S
authors: Hermann
authors: R Clayton
authors: RC
authors: Shallcross
authors: Klaus
authors: K
authors: Meerholz
keywords: CdSe nanocrystals; distributed feedback; microcontact printing; molding; polymer laser