University of Hamburg, Germany

腾讯视频会议号：410 818 046，密码：231120

报告人简介

Franz X. Kärtner heads the Ultrafast Optics and X-rays Group at the Center for Free-Electron Laser Science at DESY and is Professor of Physics at Universität Hamburg. He received his MS and PhD degrees from Technical University of Munich in Electrical Engineering in 1986 and 1989, respectively, was a Feodor-Lynen Fellow of the Alexander von Humboldt-Foundation at the Research Laboratory of Electronics at MIT from 1991-1993, and received the Venia Legendi in Experimental Physics from ETH Zurich in 1997. He carried out research and taught on the faculty of Karlsruhe Institute of Technology and Massachusetts Institute of Technology before joining DESY and Universität Hamburg in 2011. He is best known for his femtosecond timing distribution systems for large-scale science facilities such as X-ray Free-Electron Lasers, which lead to the founding of the spin-off company Cycle GmbH, for which he received the 2022 IEEE Laser Instrumentation Award. His research interests include noise in classical and quantum systems, ultrashort pulse generation, precision timing, photonic analog-to-digital conversion, attosecond science and strong-field physics as well THz acceleration and novel x-ray sources. He is a fellow of OSA and IEEE.

报告摘要

Field emission from plasmonic nano antennas with few-cycle optical pulses is sensitive to the carrier-envelope phase. We demonstrate single shot carrier envelope phase detectors by optimizing the plasmonic response of large-scale nano antenna arrays opening up the development of electronic circuits operating at optical frequencies. Such nanoantenna arrays may also enable the generation of bunched electron beams from cathodes driven by strong mid-infrared fields. Parametric Waveform Synthesis for the generation of sub-cycle optical pulses and controlled isolated attosecond pulse generation is shown. We will also discuss progress in cryogenic lasers for scaling of parametric waveform synthesizers to high repetition rate, optical undulators and THz generation for implementing THz accelerators.

邀请人：常国庆 研究员
联系人：万    源 特聘研究员
              田春璐  cltian@iphy.ac.cn
主办方：中国科学院物理研究所、松山湖材料实验室