Controlling the emission properties of solution-processed organic distributed feedback lasers through resonator design.

ABSTRACT: Surface-emitting distributed feedback (DFB) lasers with both, resonator and active material based on solution-processable polymers, are attractive light sources for a variety of low-cost applications. Besides, the lasers should have competitive characteristics compared to devices based on high-quality inorganic resonators. Here, we report high performing all-solution-processed organic DFB lasers, consisting of water-processed photoresist layers with surface relief gratings located over the active films, whose emission properties can be finely tuned through resonator design. Their laser threshold and efficiency are simultaneously optimized by proper selection of residual resist thickness and grating depth, d. Lowest thresholds and largest efficiencies are obtained when there is no residual

SUBMITTER: Bonal V 

PROVIDER: S-EPMC6671999 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature