Random Laser Action from Electrospun Polymeric Nanofibers Doped Either with Organic Dye or Semiconductor Nanoprisms

The search for light sources with targeted characteristics motivates the work of a large part of the photonics community. One topical subject in this area is the study of Random Lasers (RLs), which use as feedback mechanism the light scattering in a random medium instead of a Fabry-Perot cavity [1]. A large variety of RLs and a diversity of applications have already been demonstrated, as reviewed in [1]. Of interest in many applications are RLs based on flexible hosts-which act not only as mechanical support-but also as scattering agent. Such host can be obtained, for example, by electrospinning fibers made by environment-friendly materials [3].