Investigation of optical limiting based on the combination of stimulated Brillouin scattering and metal-phthalocyanine complexes

In order to improve the optical limiting performance based on stimulated Brillouin scattering (SBS), an optical limiter based on the combination of SBS and metal-phthalocyanine complexes (MPCs) is proposed in this paper. The output energy of the combination optical limiting designed based on SBS followed by MPCs shows flatter characteristic. The dependence of the output energy of optical limiting based on this combination approach on the input light intensity is numerically simulated, and validated in a continuum Nd:YAG seed-injected laser system. The theoretical and the experimental results indicate that the output energy based on this approach has a flatter characheristie than based on a single SBS.