IEEE Methodist College of Engineering & Technology Student Branch

This presentation will begin with a general discussion on the current landscape of THz research and development. In particular, the state-of-the-art of MHz-through-THz material characterization will be briefly reviewed. Subsequently, two groups of free-space THz measurement techniques will be described for accurate material characterization and parametric extraction in connection with frequency independent optical paths. Quasi-optical mirror and lens systems are studied and developed over THz range to achieve precision complex permittivity measurements of dielectric substrates, films, and materials. To achieve a wide plane wave zone for the center of four-parabolic-mirror systems, two corrugated horns are designed and fabricated for the measurement systems. The Gaussicity of the corrugated horn is larger than 97.4%. For the proposed multiple reflection model and direct wave model, a set of closed-form expressions of loss tangent are derived from transmission parameters of the measurement systems. The resolution and uncertainty of loss tangent are examined according to the working frequency, the thickness of wafer or substrate, the real part of relative permittivity, and the transmission measurement uncertainty. The complex permittivity of Rogers/Duroid series PCB substrates, which are commonly used at microwave frequencies, and silicon wafers are measured over THz ranges. Speaker(s): Gunes Karabulut-Kurt, Ke Wu Agenda: 09:45 AM - 10:00 AM: Workshop opening by Matthew Naslcheraghi, Chair of YP Montreal 10:00 AM - 10:10 AM: Terahertz Days workshop series introduction and speaker introduction by chair of Terahertz Days, Dr. Gunes Karabulut Kurt 10:10 AM - 11:00 AM: Talk by Prof. Ke Wu 11:00 AM - 11:20 AM: Q & A session 11:20 AM - 11:30 AM: Closing Remarks Montreal, Quebec, Canada, Virtual: https://events.vtools.ieee.org/m/312519

Nanophotonics modelling for 21St century applications is becoming vital. The computational modeling provides a fundamental understanding of the relying physics behind the operation of photonic devices. However, computational modeling is still a challenge as some of the existing modeling techniques fail to capture the correct behavior of nano-photonic devices. In this regard, this talk will introduce an overview of the existing computational modeling tools for analyzing photonic devices, in general, and highlighting their salient features and shortcomings. It is well known that “plasmonics” plays a vital role now in localising the optical field beyond the diffraction limit and hence in integrated optics. Therefore, the talk will focus on plasmonics modeling issues and the failure of the classical electromagnetic solvers to accurately characterize the nano-plasmonic devices. Therefore, new accurate and stable beam propagation method will be introduced for analyzing plasmonics in the classical regime. The rigor of this approach is mainly because of relying on the finite elements method and the twice faster Blocked Schur algorithm which can exactly represent all the wide spectrum of radiation, evanescent, and surface modes produced by the strong discontinuity between metal and its surroundings. Moreover, in merging quantum plasmonic devices, it becomes essential to introduce “Quantum Corrected Model (QCM)” in order to accurately model these devices, and the basics of QCM will be also discussed. Speaker(s): Prof. Salah Obayya, Room: MC603, McConnell Engineering building, 3480 University Street, H3A 0E9, Montreal, Quebec, Canada, Virtual: https://events.vtools.ieee.org/m/312225

May 16th marks the International Day of Light, which highlights the central role played by light in our daily lives. It is a celebration of the enabling nature of photonics, and the many ways in which light-based technologies are making way for a better future. The same can be said about the scientific experts behind those technologies: they also can enable change in many different ways, whether behind or beyond the lab. In this talk, I will share my pivoting story and how I found I could best leverage my technical expertise & skillset in my new role at Optonique. When it comes to optics & photonics, Optonique is uniquely positioned to support industry, communicate with government, and build bridges with academia. Join us to learn & discuss about Optonique’s mission, and let’s celebrate together the ways in which the photonics community is changing the world! Speaker(s): Dr. Madison Rilling (elle | she/her), Room:MC603, McConnell Engineering building, 3480 University Street, H3A 0E9, Montreal, Quebec, Canada, Virtual: https://events.vtools.ieee.org/m/313684