Fabrication and characterization of periodically patterned silica fiber structures for enhanced second-order nonlinearity.

摘要: We develop and characterize a UV ablation technique that can be used to pattern soft materials such as polymers nonlinear molecules self-assembled over silica microstructures. Using this method, we fabricate spatially periodic coating of film thin fiber taper for second harmonic generation (SHG). Experimentally, find the signal produced by with is 15 times stronger than same uniform coating, which suggests quasi-phase-matching at least partially achieved in patterned taper. The also other types functional nanomaterials microstructures curved surfaces, demonstrated deposition gold nanoparticles structures.