Preparation of the medium with a random electromagnetic field by use of surface plasmon resonance for the control of light diffusion

我们制作了分散有金属纳米颗粒的系统，并研究了由于表面等离子体共振而增加的散射截面和局部电场对光扩散和多重散射的影响。特别地，制备了具有高度各向异性结构的金属纳米颗粒，以考察形状对光扩散的影响。已经阐明了基于光的多次散射的光学功能。实例包括基于金属纳米颗粒的随机激光和光学烧孔。此外，发现金属微粒增强了基质的双折射。

We have fabricated systems dispersed with metal nanoparticles, and examined the effects of increased scattering cross section and local electric field due to the surface plasmon resonance to the light diffusion and multiple scattering. Especially, the metal nanoparticle with a high anisotropic structure was prepared to examine the shape effects to the light diffusion. Optical functionalities based on multiple scattering of light have been elucidated. Examples include metal-nanoparticle-based random laser and optical hole burning. Moreover, the metal microparticle was found to enhance the birefringence of the matrix.