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.
Guided Bloch Surface Waves on Ultrathin Polymeric Ridges / Emiliano, Descrovi; Tristan, Sfez; Marzia, Quaglio; Daniele, Brunazzo; Dominici, Lorenzo; Michelotti, Francesco; Hans Peter, Herzig; O. J. F., Martin; Olivier J. F., Martin; Fabrizio, Giorgis. - In: NANO LETTERS. - ISSN 1530-6984. - STAMPA. - 10:6(2010), pp. 2087-2091. (Intervento presentato al convegno , 36th International Conference on Micro and Nano Engineering (MNE2010) tenutosi a Genova (I) nel September 19th-22nd (2010)) [10.1021/nl100481q].
Guided Bloch Surface Waves on Ultrathin Polymeric Ridges
DOMINICI, Lorenzo;MICHELOTTI, Francesco;
2010
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
