Title :
Enhancing light-matter interaction via Bloch surface waves for biosensing applications
Author :
Liscidini, M. ; Galli, M. ; Patrini, M. ; Dacarro, G. ; Andreani, L.C. ; Bajoni, D. ; Ricciardi, C. ; Giorgis, F. ; Loo, R.W. ; Goh, M.C. ; Shi, M. ; Sipe, J.E.
Author_Institution :
Dept. of Phys. A. Volta, Univ. of Pavia, Pavia, Italy
fDate :
June 28 2009-July 2 2009
Abstract :
We present two different configurations for the detection of Bloch surface waves in silicon nitride multilayers: attenuated total reflectance and photoluminescence measurements. In the first case, we measured a 50-fold enhancement of the diffraction signal by a protein grating printed on the multilayer when the incident light beam is coupled to the surface waves. In the second case, we observe a significant modification of the spontaneous emission by a monolayer of rhodamine molecules bonded to the photonic crystal surface. These results may found application in the field of optical sensors and biosensors.
Keywords :
attenuated total reflection; multilayers; organic compounds; photoluminescence; photonic crystals; silicon compounds; spontaneous emission; Bloch surface waves; SiN3; attenuated total reflectance; photoluminescence; photonic crystal surface; spontaneous emission; Attenuation measurement; Biosensors; Diffraction; Nonhomogeneous media; Optical surface waves; Photoluminescence; Proteins; Reflectivity; Silicon; Surface waves; biosensing; diffraction grating; emission; photonic crystals; sensing; surface waves;
Conference_Titel :
Transparent Optical Networks, 2009. ICTON '09. 11th International Conference on
Conference_Location :
Azores
Print_ISBN :
978-1-4244-4825-8
Electronic_ISBN :
978-1-4244-4827-2
DOI :
10.1109/ICTON.2009.5185336
