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Opto-phononics : controlling light-hypersound interactions at the nanoscale - Daniel Lanzillotti-Kimur - Mardi 1er avril 2014 à 11 h

Daniel Lanzillotti-Kimura - Laboratoire de Photonique et de Nanostructures, CNRS and Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot – Paris VII

Mardi 1er avril 2014 à 11 h
INSP - 4 place Jussieu - 75252 PARIS Cedex 05 - Barre 22-32, 2e étage, salle 201

Abstract

The idea of trapping and manipulating light, sound and heat has fascinated mankind since ancient times. The development of micro- and nanofabrication techniques enabled the study of nanostructures where it is possible to confine photons (light) and phonons (nanometer wavelength acoustic waves) in a single resonant cavity of about 100 nanometers. Through the engineering of semiconductor and metallic nanostructures it is possible to control both the dynamics and the interactions between photons and phonons at ultrahigh frequencies and reduced scales.

In this seminar I will describe devices based on plasmonic nano-antennas (capable of confining vibrations) optimized to generate, detect, and annihilate acoustic phonons and possible applications. Also, I will introduce different strategies to engineer the simultaneous photonic and photonic confinement based on semiconductor microcavities, and will discuss experimental results obtained in these structures. These structures open new possibilities toward the development of efficient coherent phonon sources, ultrafast optical modulation systems, and the study of novel physical phenomena.