Authors
Abdo Iskandar, Agnieszka Gwiazda, Joan Younes, Michel Kazan, Aurélien Bruyant, Malek Tabbal, Gilles Lerondel,
Title
Interaction between confined phonons and photons in periodic silicon resonators
In
Physical Review B
Volume
97
Issue
9
Pages
094308
Publisher
American Physical Society
Year
2018
Indexed by
Abstract
In this paper, we demonstrate that phonons and photons of different momenta can be confined and interact with each other within the same nanostructure. The interaction between confined phonons and confined photons in silicon resonator arrays is observed by means of Raman scattering. The Raman spectra from large arrays of dielectric silicon resonators exhibited Raman enhancement accompanied with a downshift and broadening. The analysis of the Raman intensity and line shape using finite-difference time-domain simulations and a spatial correlation model demonstrated an interaction between photons confined in the resonators and phonons confined in highly defective regions prompted by the structuring process. It was shown that the Raman enhancement is due to collective lattice resonance inducing field confinement in the resonators, while the spectra downshift and broadening are signatures of the …
Affiliations
Offprint