title: Integrated III-V Photonic Crystal--Si waveguide platform with tailored optomechanical coupling.
abstract: Optomechanical systems, in which the vibrations of a mechanical resonator are coupled to an electromagnetic radiation, have permitted the investigation of a wealth of novel physical effects. To fully exploit these phenomena in realistic circuits and to achieve different functionalities on a single chip, the integration of optomechanical resonators is mandatory. Here, we propose a novel approach to heterogeneously integrate arrays of two-dimensional photonic crystal defect cavities on top of silicon-on-insulator waveguides. The optomechanical response of these devices is investigated and evidences an optomechanical coupling involving both dispersive and dissipative mechanisms. By controlling the optical coupling between the waveguide and the photonic crystal, we were able to vary and understand the relative strength of these couplings. This scalable platform allows for an unprecedented control on the optomechanical coupling mechanisms, with a potential benefit in cooling experiments, and for the development of multi-element optomechanical circuits in the framework of optomechanically-driven signal-processing applications.
authors.affiliation: Laboratoire de Photonique et Nanostructures LPN-CNRS UPR-20, Route de Nozay, 91460 Marcoussis, France.
authors.forename: Viktor
authors.initials: V
authors.lastname: Tsvirkun
authors.affiliation: Laboratoire de Photonique et Nanostructures LPN-CNRS UPR-20, Route de Nozay, 91460 Marcoussis, France.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Surrente
authors.affiliation: Laboratoire de Photonique et Nanostructures LPN-CNRS UPR-20, Route de Nozay, 91460 Marcoussis, France.|Université Paris Diderot, F-75205 Paris Cedex 13, France.
authors.forename: Fabrice
authors.initials: F
authors.lastname: Raineri
authors.affiliation: Laboratoire de Photonique et Nanostructures LPN-CNRS UPR-20, Route de Nozay, 91460 Marcoussis, France.
authors.forename: Grégoire
authors.initials: G
authors.lastname: Beaudoin
authors.affiliation: Laboratoire de Photonique et Nanostructures LPN-CNRS UPR-20, Route de Nozay, 91460 Marcoussis, France.
authors.forename: Rama
authors.initials: R
authors.lastname: Raj
authors.affiliation: Laboratoire de Photonique et Nanostructures LPN-CNRS UPR-20, Route de Nozay, 91460 Marcoussis, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Sagnes
authors.affiliation: Laboratoire de Photonique et Nanostructures LPN-CNRS UPR-20, Route de Nozay, 91460 Marcoussis, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Robert-Philip
authors.affiliation: Laboratoire de Photonique et Nanostructures LPN-CNRS UPR-20, Route de Nozay, 91460 Marcoussis, France.|Université Paris Diderot, F-75205 Paris Cedex 13, France.
authors.forename: Rémy
authors.initials: R
authors.lastname: Braive