PHAS Colloquia

Low-Loss Nanophotonics in the mid- and long-wave infrared

by Chase T. Ellis (U.S. Naval Research Laboratory)

Tuesday, 6 October 2020 from to (America/Chicago)
Speaker: Dr. Chase T. Ellis (Electronics Science and Technology Division, U.S. Naval Research Laboratory)

Title: Low-Loss Nanophotonics in the mid- and long-wave infrared

Abstract: The high optical losses of metal-based plasmonic materials in the infrared have driven an extensive search for alternative lower-loss materials that can support plasmonic effects, such as sub-diffraction confinement of optical fields. One promising alternative employs polar-dielectric materials (e.g., SiC) that are capable of supporting phonon-mediated, collective oscillations of bound lattice charges (surface phonon polaritons), which result in low-loss, plasmonic-like, sub-diffractional excitations over the mid- to far-infrared spectral range. In addition to outlining the basic physics of surface phonon polariton resonances, I will also discuss our research group’s latest advances in manipulating light at the nanoscale with low-loss polar dielectric materials (e.g., SiC and calcite). This work includes our efforts to actively tune resonances, further decrease losses by tailoring resonator interactions, and realize hyperbolic volume confined states within nanostructured calcite crystals.

About the speaker: Dr. Chase Ellis completed his PhD in the Department of Physics at the University at Buffalo (SUNY) in 2013, where he studied the magneto-optical properties of mono- and multi-layer epitaxial graphene. After completing his PhD, Chase served as a National Research Council Postdoctoral fellow within the Electronics Science & Technology Division at the U.S. Naval Research Laboratory (NRL) in Washington, DC. In 2016, he entered federal service as a staff scientist at NRL through the Jerome and Isabella Karles Fellowship. His current research interests focus on the photonic properties of both 2D and 3D polar-dielectric materials that support plasmonic-like resonances that operate in the mid- to far-infrared spectral regime.


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Meeting ID: 995 291 7599
Passcode: PHAS


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Organised by Myoung-Hwan Kim/CMP