Guided Bloch Surface Waves on Ultrathin Polymeric Ridges
We present a direct evidence of Bloch surface waves (BSWs) waveguiding on ultrathin polymeric ridges, supported by near-field measurements. It is demonstrated that near-infrared BSWs sustained by a silicon-based multilayer can be locally coupled and guided through dielectric ridges of nanometric thickness with low propagation losses. Using a conventional prism-based configuration, we demonstrate a wavelength-selective BSW coupling inside and outside the ridge. Such a result can open interesting opportunities in surface wave-mediated sensing applications, where light could be selectively coupled in specific regions defined by nanometric reliefs.
Keywords: Surface electromagnetic waves ; near-field optical microscopy ; Dimensional Photonic Crystals ; Electromagnetic-Waves ; Plasmon Modes ; Light ; Propagation ; Scattering ; Biosensors ; Sensor
Record created on 2011-04-11, modified on 2016-08-09