【学术报告】Christian David：面向同步辐射和X射线自由电子激光(XFEL)应用的衍射X射线光学元件纳米加工
本报告将综述面向 XFEL 辐射应用的行射光学元件制造技术与应用进展，涵盖多种光源体系与制备工艺，光子能量范围覆盖极紫外(EUV)至硬 X射线全波段。
本报告将综述面向 XFEL 辐射应用的行射光学元件制造技术与应用进展，涵盖多种光源体系与制备工艺，光子能量范围覆盖极紫外(EUV)至硬 X射线全波段。
In past several decades, nanophotonics has been developing from in-lab fundamental understandings of our world towards real applications. In this talk, I will summarize our thinkings on the emerging frontiers of nanophotonics, as well as our efforts in these areas. Briefly, our thinking covers two perspectives - material platform and wavelength - from emerging low-dimensional nanomaterials to conventional optical crystals and from long-wavelength to X-ray nanophotonics.I will also briefly cover a few applications from optical information processing to miniaturized microscopy, and to nonlinear and quantum light sources and others.
We report a neural network model, OptoGPT, to tackle the challenge of inverse design. We introduce "structure tokens" to denote the material and thickness information and serialize a multilayer structure into a token sequence. In this way, for arbitrary optical response, the OptoGPT model can output any type of multilayer structure, with different number of layers, different materials, and thicknesses.
This talk will cover the fundamentals of 2D materials, twistronics, and nanoscopy, ensuring that students develop a foundational understanding of these topics while being encouraged to raise their own questions in this rapidly growing and phenomenologically rich field -one full of mystery, possibility, and open challenges.
Why does copper conduct electricity while glass does not? What do electrons actually do inside a solid? This talk explores how quantum mechanics governs the behavior of electrons in materials.
In my talk, I will provide introduction into light-matter coupling, properties of exciton-polaritons, their nonlinearity and underlying exciton-exciton interactions. Further, I will discuss the implementation of basic experiments for probing and controlling 2D exciton-polaritons and highlight recent experimental results. Finally, if time permits, I will discuss how to create and control quantum correlated states in 2D semiconductors with electrostatic gating.
This lecture aims to provide undergraduate students with a conceptual understanding of the physics behind near-field optics and how advanced optical imaging can be realized beyond classical limits.
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