Advanced Materials · 2001 · 85 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceOptical MaterialsOpticsPhotonicsLaser OpticsOptical PolymersOptical SourcesOptical Thin FilmsPolymer Thin FilmsFeedbackGrating CouplersPolymer GratingsPolymer LasersPolymer PhotonicsQuartzThreshold BehaviorWave Spectral Width
An optically pumped circular grating polymer laser (see Figure) is obtained using a nanostructured quartz substrate covered with a thin film of methyl-substituted ladder-type poly(p-phenylene) (MeLPPP). The second-order grating serves at the same time as a 2D feedback mechanism and as an output coupler. Laser emission perpendicular to the substrate with a clear threshold behavior, an extremely narrow spectral width, and a highly directional beam is achieved.