Advance designs of random lasers toward the development of miniature laser systems are in
demand. Random lasing from Rhodamine-B dye doped polystyrene microparticles was
demonstrated. Bare polystyrene spheres were used as scatterers, and these provided
optical feedback to the gain. Random lasing was successfully demonstrated in two different
disordered environments: in binary colloidal solution and in photonic glass. Incoherent
feedback occurred in both the cases, and laser emission was obtained with a spectral line …