【Time】
Wednesday, June 17th
9:30 AM
【Location】
Academic Lecture Hall 716, Science Building
Personal Profile
Emiliano Descrovi is a Professor of Physics at Politecnico di Torino in Italy, President of the European Optical Society, and an Editorial Board Member of Advanced Photonics Nexus . He received his Master’s degree in Physics from the University of Turin, Italy in 1999, and his Ph.D. from the University of Neuchâtel, Switzerland in 2005. From 2020 to 2021, he served as a Professor of Photonics at the Norwegian University of Science and Technology. His research interests include dielectric nanophotonics, photoresponsive polymer photonics, and applications in biophotonics.
Brief Introduction
Recent results on light manipulation by means of Bloch surface waves (BSW) on multilayers are presented. Planar multilayers sustaining either TE or TM-polarized BSW offer new opportunities for light management at the micro and nanoscale. In the contribution, how light can be confined and propagated by means of BSW coupling, in a 2D optics fashion, wherein light is flowing on an almost flat surface with weak perturbations. It will be discussed how the presence of the high photonic LDOS associated to BSW can change the emission behaviour of organic dipoles located on the multilayer surface. The concept of a BSW planar cavity is introduced and the corresponding effects on the spectral and temporal signature of emitters located therein will be discussed. Finally, chiral diffractive gratings will be demonstrated to provide an outcoupling mechanism for BSW resulting in free-space beams carrying specific orbital angular momenta. The results have potential applications in the domain of engineered sources for telecommunications and quantum technologies.
