Over 140 invited talks. Here are a few online ones.  

Nonlinear Terahertz Emission Spectroscopy of Topological Chiral Multifold Semimetals

Giant Nonlinear Optical Responses in Polar Weyl Semimetals
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Antiferromagnetic resonance and THz continuum in α-RuCl3 (Slides)

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Low-energy electrodynamics of topological insulator thin films (Slides)