Optical and mechanical wave manipulation in dielectric metasurfaces

1 December 2022
Start time 
2:30 pm
Polo Ferrari 1 - Via Sommarive 5, Povo (Trento)
Room A204
Department of Physics
Target audience: 
University community
Contact person: 
Prof. Lorenzo Pavesi
Contact details: 
Camilla Kandamulla Arachchige
+39 0461 283172


Dr. Alessandro Pitanti
Lab. NEST, CNR – NANO & Scuola Normale Superiore, Pisa, Italy
Paul-Drude-Institut fur Festkörpelektronik, Berlin, Germany


Artificial structured materials – metamaterials – are the quintessential tool for controlling and manipulating all degrees of freedom of either optical or mechanical waves. In this talk I will show the application of the metamaterial concept on a dielectric optomechanical membrane, where light and vibration dynamics are coupled and strongly intertwined.
The optomechanical metasurface unveils interesting features linked to the device symmetry, including mechanical-based polarization modulation and polarimetry, anisotropy and anomalous refraction of mechanical waves and the mutual coupling of fully optomechanical Bloch modes.