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STU-GTIIT光学论坛(Jicai Zhang)-2024.04.16




STU-GTIIT光学论坛(No.19

 

报告题目: Advancing Ultrafast Probing and Engineering of Electronic and Phononic Properties in Condensed Matter through High-Harmonic Spectroscopy(全英报告)

报 告 人:Jicai Zhang(Department of Physics, The University of Hong Kong, Hong Kong SAR)

报告时间:2024416 17:00

报告地点:at lecture hall E410 in the north campus of GTIIT

报告摘要:

High-harmonic generation (HHG) from solids has emerged as a vibrant area of research in recent years, building upon decades of progress in strong-field physics and attosecond science with gases. Due to the highly nonlinear nature of HHG process, it offers exciting prospects for investigating the electronic structure and ultrafast dynamics on sub-femtosecond timescales (1 fs = 10-15 s). These advancements have paved the way for novel applications, including all-optical band structure reconstruction, crystal symmetry determination, analysis of topological character, material correlations, many-body effects, reconstruction of Berry curvature, etc. In this talk, I will present our recent works in high-harmonic generation from solids. Firstly, we have developed a novel technique for probing lattice dynamics using HHG spectroscopy. Secondly, we have successfully achieved coherent control of band gap dynamics through electron-phonon couplings. Lastly, we have explored Floquet Bloch engineering by harnessing the light-field-induced ponderomotive force. These investigations offer some opportunities for understanding and manipulating fundamental processes, such as carrier-carrier, carrier-phonon, and phonon-phonon interactions, in condensed matter systems.

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欢迎全校师生参加!

理学院

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