Professional Education

  • Bachelor of Science, Universiteit Gent (2009)
  • Master of Science, Universiteit Gent (2011)
  • Doctor of Philosophy, Universiteit Gent (2016)

Stanford Advisors

All Publications

  • Optomechanical antennas for on-chip beam-steering OPTICS EXPRESS Sarabalis, C. J., Van Laer, R., Safavi-Naeini, A. H. 2018; 26 (17): 22075–99


    Rapid and low-power control over the direction of a radiating light field is a major challenge in photonics and a key enabling technology for emerging sensors and free-space communication links. Current approaches based on bulky motorized components are limited by their high cost and power consumption, while on-chip optical phased arrays face challenges in scaling and programmability. Here, we propose a solid-state approach to beam-steering using optomechanical antennas. We combine recent progress in simultaneous control of optical and mechanical waves with remarkable advances in on-chip optical phased arrays to enable low-power and full two-dimensional beam-steering of monochromatic light. We present a design of a silicon photonic system made of photonic-phononic waveguides that achieves 44° field of view with 880 resolvable spots by sweeping the mechanical wavelength with about a milliwatt of mechanical power. Using mechanical waves as nonreciprocal, active gratings allows us to quickly reconfigure the beam direction, beam shape, and the number of beams. It also enables us to distinguish between light that we send and receive.

    View details for DOI 10.1364/OE.26.022075

    View details for Web of Science ID 000442136200061

    View details for PubMedID 30130907

  • Thermal Brillouin noise observed in silicon optomechanical waveguide JOURNAL OF OPTICS Van Laer, R., Sarabalis, C. J., Baets, R., Van Thourhout, D., Safavi-Naeini, A. H. 2017; 19 (4)
  • Enabling Strong Coupling in Nanoscale Silicon Optomechanical Waveguides Van Laer, R., Safavi-Naeini, A., IEEE IEEE. 2017