High quality factor silica microspheres functionalized with self-assembled nanomaterials.
Kandas-I; Zhang-B; Daengngam-C; Ashry-I; Jao-C-Y; Peng-B; Ozdemir-SK; Robinson-HD; Heflin-JR; Yang-L; Xu-Y
Opt Express 2013 Sep; 21(18):20601-20610
With extremely low material absorption and exceptional surface smoothness, silica-based optical resonators can achieve extremely high cavity quality (Q) factors. However, the intrinsic material limitations of silica (e.g., lack of second order nonlinearity) may limit the potential applications of silica-based high Q resonators. Here we report some results in utilizing layer-by-layer self-assembly to functionalize silica microspheres with nonlinear and plasmonic nanomaterials while maintaining Q factors as high as 107. We compare experimentally measured Q factors with theoretical estimates, and find good agreement.
Nanotechnology; Lasers; Optics
Ishac Kandas, The Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, Virginia 24061
Virginia Polytechnic Institute and State University