LASING BEHAVIOR IN A LIQUID SPHERICAL DYE-LASER CONTAINING HIGHLY SCATTERING NANOPARTICLES

With the addition of scattering nanoparticles to dye-doped spherical d roplets, lasing has been observed with well-defined thresholds in inpu t-output data. One-order or more magnitude enhancement of peak intensi ty from droplet emission has been obtained with certain (optimum) addi tive scattering particles compared with nonadditive scattering particl es (neat dye-doped droplets). Characteristics of input-output intensit ies, emission spectra (with wavelength shifts), and spectral linewidth s are reported experimentally, depending on additive quantities of sca ttering nanoparticles. (C) 1996 Optical Society of America