Bottom-up assembly of quadratic materials for photonic devices
Nonlinear and electro-optic devices are present in our daily life with many applications: light sources for microsurgery, green laser pointers, or modulators for telecommunication. They mainly use bulk materials such as glass fibers or high-quality crystals, hardly integrable or scalable due to low signal and difficult fabrication. Here I will show several strategies to enhance optical signals by engineering metal-oxides. First, I will explain some fundamental aspects of quadratic materials. Then, I will show several photonic systems relying on bottom-up assemblies of barium titanate nanoparticles either to obtain electro-optic metasurfaces or broadband Mie driven microspheres.
ETH Zurich (Switzerland)
Since 2021, Rachel Grange is an associate professor in the field of integrated and nanophotonics in the Department of Physics at ETH Zurich (Switzerland). She has been Assistant Professor at ETH Zurich since 2015. From 2011 to 2014, she was junior group leader at the Friedrich Schiller University in Jena (Germany). During her post-doc at EPFL (Switzerland), she worked on nonlinear bioimaging with metal-oxides nanoparticles from 2007-2010. She received her Ph.D. in 2006 from ETH Zurich on ultrafast laser physics. Her research covers material investigations at the nanoscale, top-down and bottom-up fabricated nanostructures with metal-oxides, mainly lithium niobate and barium titanate.
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