How to Enhance Nonlinear Optical Signals at the Nanoscale? Beyond Metal and Semiconductors: Nano-Oxides for Nonlinear Photonics

Hosted By: Nonlinear Optics Technical Group

10 January 2019, 11:00 - 12:00

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Nonlinear optics started one year after the invention of laser in 1961 with an experiment of light conversion from one color of frequency w into another one of the exact double frequency 2w, a phenomenon called second-harmonic generation (SHG).

Many applications, e.g. microsurgery light sources or green laser pointers have emerged in the last 50 years using optical nonlinearities of bulk materials. However, applying nonlinear effects at the nanoscale generates very tiny signals and finding materials with strong nonlinearities is still an open challenge to avoid using high power and large interaction length within the material. In this webinar hosted by the OSA Nonlinear Optics Technical Group, Dr. Rachel Grange of ETH Zurich will show several strategies to maximize nonlinear optical signals in oxide-based materials, because of their wide bandgap, significant second-order optical nonlinearities, strong electro-optic effects, high damage threshold, and biocompatibility.

What You Will Learn:

  • Nonlinear optics at small scale in metal-oxides materials

Who Should Attend:

  • Individuals interested in the combination of nonlinear optics, nano-optics and integrated optics


Dr. Rachel Grange, ETH Zurich

Rachel Grange is an Assistant Professor in the field of nonlinear nanophotonics in the Department of Physics at ETH Zurich (Switzerland). She received her Ph.D. in 2006 from ETH Zurich on ultrafast laser physics. During her post-doc at EPFL (Switzerland), she worked on nonlinear bioimaging with metal-oxides nanoparticles. From 2011 to 2014, she was group leader at the Friedrich Schiller University in Jena (Germany). Her research covers material investigations at the nanoscale with high resolution imaging tools. She develops top-down and bottom-up fabricated nanostructures with metal-oxides, mainly lithium niobate and barium titanate. Her goal is to understand and control their behaviors to design versatile compact photonic devices.