The Film Random Laser Doped with Core-Shell Structure Ag Spheres

A chemical reduction method is employed to fabricate the core-shell structure Ag spheres.The ink of Rhodamine 6G, Polyvinyl Alcohol and Ag spheres is spin coated on a silicone slab, and the film random laser doped with core-shell structure Ag spheres is fabricated after solidification.The Ag spheres are employed as scattering particles, and the film of R6G and PVA work as active material layer.Irradiated by the pump beam, the random laser emission is with the threshold of about 12.55mJ/cm 2 .This reduction method is a cheap way to fabricate Ag spheres and benefits the applications of random lasers.