Wednesday Colloquia

Active plasmonics

by Prof. Vasa Parinda (IIT Bombay)

Asia/Kolkata
AG - 66 (Lecture Theatre) (TIFR, Colaba, Mumbai)

AG - 66 (Lecture Theatre)

TIFR, Colaba, Mumbai

Description
Abstract: Metal nanostructures supporting surface plasmon polaritons SPPs) carry significant potential for guiding and manipulating light on the nanoscale. SPPs are spatially confined electromagnetic field modes at a metal-dielectric interface generating ultrashort and intense near-field optical forces, which can potentially be used to enhance and control the optical response of quantum emitters, the key components of the diverse, contemporary photonics applications. Investigations of SPP-quantum emitter interactions have led to the emerging and exciting field of active plasmonics, dealing with ultrafast all-optical control of SPPs on the nanoscale. In this talk, some aspects of the fundamental physical mechanism in active plasmonics, namely the SPP-quantum emitter dipole coupling will be explored. References: [1] Ultrafast nano-optics, P. Vasa, C. Ropers, R. Pomraenke and C. Lienau, Laser and Photonics Reviews 3, 483, 2009. [2] Real-time observation of ultrafast Rabi oscillations in between excitons and plasmons in metal nanostructures with J-aggregates, P. Vasa, W. Wang, R. Pomraenke, M. Lammers, M. Maiuri, C. Manzoni, G. Cerullo and C. Lienau, Nature Photonics 7, 128, 2013.