Giant nonlinear optical response in topological semimetals
Invited
Abstract
The second-order optical nonlinearity has been a focus of basic research and technological development for decades as it is both a probe of inversion symmetry breaking in media and the basis for generating coherent light from far-infrared to ultraviolet wavelengths. Here, we focus on experimental investigations on the relation between band geometry/topology and nonlinear optics. I would like to discuss how do the second-order responses that originates from band geometry and topology in polar and chiral topological semimetals respectively. In both cases, we observed large optical nonlinearity and the possible origins will be discussed.
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Presenters
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Liang Wu
Physics and Astronomy, University of Pennsylvania, Department of Physics & Astronomy, University of Pennsylvania, Department of Physics and Astronomy, University of Pennsylvania
Authors
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Liang Wu
Physics and Astronomy, University of Pennsylvania, Department of Physics & Astronomy, University of Pennsylvania, Department of Physics and Astronomy, University of Pennsylvania