Laser Emission from Electrospun Polymer Nanofibers

Fully organic nanofiber lasers, made by a polymer matrix doped with gain molecules, are demonstrated. They exhibit emission in the visible and near infrared range (see image), supporting efficient waveguiding of the self-emitted light. Individual fibers can operate as optical cavities, emitting single-mode laser light at visible wavelengths with a threshold of tens of µJ cm−2.