PROFESSOR @UNIVERSITY OF BARCELONA
Cavity Optomechanics for applications at room temperature
The paradigmatic setup in cavity optomechanics is an optical cavity with an end mirror that can vibrate. This kind of setup appears already several decades ago in theoretical considerations and basic experiments, starting with Vladimir Braginsky’s work at the end of the 60s. Since then, the advances of fabrication techniques have made available the successful demonstration of a wide variety of high-quality optomechanical (OM) devices, i.e., high-Q mechanical resonators that are efficiently coupled to high-Q optical cavities. All those architectures, which span a huge range of vibration frequencies and effective masses, are described by the same physical formalism and allow, for instance, testing quantum mechanics even on objects of macroscopic scales .
In this seminar I will introduce the field of cavity optomechanics and place our specific research interests in this wide context, which aims to find applications at ambient operation conditions. I will review our recent progresses using spherical optomechanical cavities and optomechanical one-dimensional photonic crystals. I will cover our recent studies on electro-mechano-optical transducers  and their possible use as OM sensors of different sorts of analytes  and of magnetic fields. 
- Aspelmeyer, T. J. Kippenberg, and F. Marquardt, Rev. Mod. Phys. 86, 1391 (2014).
- Navarro-Urrios, M.F. Colombano, G. Arregui, G. Madiot, A. Pitanti, A. Griol, T. Makkonen, J. Ahopelto, C.M. Sotomayor-Torres and A. Martínez, ACS Photonics 9, 2, 413–419 (2022)
- Navarro‑Urrios, E. Kang, P. Xiao, M. F. Colombano, G. Arregui, B. Graczykowski, N. E. Capuj, M. Sledzinska, C. M. Sotomayor‑Torres and G. Fytas, Scientific Reports, 11 (1), 7829, (2021).
- F. Colombano, G. Arregui, F. Bonell, N. E. Capuj, E. Chavez-Angel, A. Pitanti, S.O. Valenzuela, C. M. Sotomayor-Torres, D. Navarro-Urrios, M. V. Costache, , Physical Review Letters, 125, 147201 (2020)
Dr. D. Navarro-Urrios is Associate Professor of the Electronics and Biomedical Engineering Department at University of Barcelona since 2021. During his career he has also worked at the Department of Physics of the University of Trento, at the CNR-NANO Institute of Pisa and at the Catalan Institute of Nanoscience and Nanotechnology (ICN2). In the last decade his main research line is cavity optomechanics, which concerns the understanding and exploitation of the interaction between light and mechanical objects within optical resonators. He has published more than 80 peer-reviewed regular scientific articles, indexed and with relative quality index. His works have received more than 1700 citations and his h-factor is 26 according to Web of Science. He is also co-organizer of the Symposium « Organized Nanostructures and Nano-objects: Fabrication, characterization and applications » in EMRS Fall every two years.