Nonlinear optics, nanophotonics and plasmonics - 9Virtual room: CMC - 1
|Thursday, May 28|
NL-9-28-1 / Control of light-matter interaction in van der Waals materials
* Vinod M. Menon, City College of New York , United States
Two-dimensional (2D) van der Waals materials have emerged as a very attractive class of optoelectronic material due to the unprecedented strength in its interaction with light. In this talk I will discuss approaches to enhance and control this interaction by integrating these 2D materials with microcavities, and metamaterials. I will first discuss the formation of strongly coupled half-light half-matter quasiparticles (microcavity polaritons)  and their spin-optic control  in the 2D transition metal dichacogenide (TMD) systems. Following this I will discuss the formation of polaritons using excited states (Rydberg states) to enhance the nonlinear polariton interaction. Recent results on electrical control  and realization of a polariton LED based on 2D TMDs  will also be presented. Finally, I will talk about strain activated room temperature single photon emission from hexagonal boron nitride (hBN)  which can be integrated with microresonators on silicon photonic platform.
NL-9-28-3 / Group 4 Transition Metal Nitride Nanoparticles for Visible/Near-IR Plasmonic Applications
* Yashar Esfahani Monfared, Dalhousie University, Canada
Mita Dasog, Dalhousie University
We present a comprehensive computational study on plasmonic properties of group 4 transition metal nitride (TMN) nanoparticles. We compare the performance of TMN nanoparticles with gold for various plasmonic applications including narrowband and broadband photothermal-based uses. Furthermore, we investigate the role of size, host medium, and particle surface characteristics on the plasmonic response of TMN nanoparticles in detail. Our results reveal the potential of ceramic nanoparticles as alternative materials for noble metals for applications in visible and near infrared region.
NL-9-28-4 / Surface Plasmonic Properties of Wrinkled Gold Wires and Films (An electron energy loss spectroscopy & microscopic polarization modulation infrared study)
* S. Shayan Mousavi Masouleh, McMaster University, Canada
Scott Rosendahl , Canadian light source
Stuart Read, Canadian light source
Gainluigi Botton, McMaster University & Canadian light source
In this study, the effect of wrinkled gold wires and films geometries on the surface plasmon response of these systems is studied. This investigation is conducted using electron energy loss spectroscopy (EELS) to map surface plasmon activities with high spatial and energy resolution. Metallic nanoparticle boundary element method (MNPBEM) simulations and polarization modulation infrared (PM-IR) microscopy are utilized as complementary methods. According to experimental results and simulations, wrinkled structures demonstrate a broadband surface plasmon response which is directly resulting from their geometrical complexities.
NL-9-28-5 / Nanowatt Thermal Radiation Sensing using Silicon Nitride Nanomechanical Resonators
* Nikaya Snell, University of Ottawa, Canada
Chang Zhang, University of Ottawa
Gengyang Mu, University of Ottawa
Raphael St-Gelais, University of Ottawa
Nanomechanical resonators are immune to electrical Johnson noise, making them a promising solution for infrared and terahertz radiation sensing beyond the performance of traditional thermal sensors (e.g., bolometers). Here, we demonstrate detection of thermal radiation using thin (100 nm), large area (3 mm × 3 mm) SiN membrane resonators at room temperature. Our measurements demonstrate a detection limit on the order of 1 nW, with a characteristic response time of 85 ms. These preliminary measurements are comparable to state-of-the art commercial thermal sensors of similar surface area and response time.
NL-9-28-6 / Quantitative Modeling of Ultrafast Thermal Phenomena in Plasmonic Nanostructures
Jean-Francois Bryche, Laboratoire Nanotechnologies Nanosystèmes (LN2) - Université de Sherbrooke/CNRS
* Paul Bresson, Laboratoire Charles Fabry (LCF) - Université Paris-Saclay / Institut d'Optique Graduate School
Mondher Besbes, Laboratoire Charles Fabry (LCF) - Université Paris-Saclay / Institut d'Optique Graduate School
Julien Moreau, Laboratoire Charles Fabry (LCF) - Université Paris-Saclay / Institut d'Optique Graduate School
Paul Ludovic Karsenti, Laboratoire Nanotechnologies Nanosystèmes (LN2) - Université de Sherbrooke/CNRS
Paul Charette, Laboratoire Nanotechnologies Nanosystèmes (LN2) - Université de Sherbrooke/CNRS
Denis Morris, Laboratoire Nanotechnologies Nanosystèmes (LN2) - Université de Sherbrooke/CNRS
Michael Canva, Laboratoire Nanotechnologies Nanosystèmes (LN2) - Université de Sherbrooke/CNRS, Canada
We report a numerical model of space- and time-resolved electronic and lattice temperatures in gold films and arrays of gold nanostructures. Using pump-probe measurements, we extract key parameters from the reflectivity measurements and fit the data to the model.