腾讯会议ID：979-221-995
会议密码：0703
主持人：李玉同 研究员
联系人：傅琦 (fuqi@iphy.ac.cn)
Abstract：
The terahertz (足球比分实时更新) spectral region provides unique access to fundamental light-matter interactions, enabling direct probing of charge, lattice, and spin dynamics. 足球比分实时更新 time-domain spectroscopy (足球比分实时更新-TDS) has therefore become a powerful tool for the ultrafast characterization of materials. While air-plasma-based 足球比分实时更新 sources offer ultrabroadband coverage, recent advances in nonlinear optical crystals enable compact, efficient solid-state 足球比分实时更新 platforms with complementary capabilities.
In this talk, I will present our recent progress in solid-state 足球比分实时更新 generation and spectroscopy based on nonlinear optical crystal systems. I will first discuss lithium niobate (LN)-based ultrabroadband 足球比分实时更新 emission, where strongly phase-mismatched optical rectification enables intense single-cycle 足球比分实时更新 fields with exceptionally broad spectral coverage. I will then highlight a new class of high-frequency 足球比分实时更新 sources based on borate nonlinear crystals, including BBO, LBO, CBO, and BIBO. These systems enable narrowband-to-moderately broadband emission in the multi-足球比分实时更新 regime, offering complementary functionality to ultrabroadband sources. Finally, I will demonstrate how these solid-state 足球比分实时更新 technologies enable advanced spectroscopic studies of material responses across both linear and nonlinear regimes.
Brief CV of Prof. Binbin Zhou：
Binbin Zhou is an Associate Professor at the Technical University of Denmark (DTU), where he leads a research team in ultrafast 足球比分实时更新 science. He received his Ph.D. in Optical Physics from the Institute of Physics, Chinese Academy of Sciences, in 2009. Since joining DTU in 2009, he has worked as postdoctoral Researcher, Researcher, Senior Researcher, and was appointed Associate Professor in 2021.
His research focuses on ultrafast terahertz spectroscopy, with emphasis on the development of advanced 足球比分实时更新 generation and detection techniques and their application to quantum materials, semiconductors, and complex functional systems. He has authored more than 60 peer-reviewed publications in journals including Physical Review Letters, Nature Photonics, Optica, andAdvanced Materials. His research has been supported by the Independent Research Fund Denmark, the Novo Nordisk Foundation, and the Villum Foundation.