Organic Lasers and Organic Photonics (2nd Edn) provides an updated and extended version of its successful first edition. It offers an authoritative description of the physics and technology of tunable organic lasers in the liquid and solid state. It also describes electrically-pumped coherent OLED sources, organic dyes for optogenetics, polymer-nanoparticle and bio-based gain media, and applications to optics and medicine.