High harmonic generation and particle acceleration driven by Bessel beams
by
Tsung-Dao Lee Institute/N6F-N600 - Lecture Room
Tsung-Dao Lee Institute
Host: Longqing Yi
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Abstract：
Novel structured light fields, moving beyond conventional Gaussian beams, are creating compelling opportunities in laser-matter interactions. Among these, Bessel-Gaussian beams are particularly attractive. As propagation-invariant solutions to the Helmholtz equation, they possess intriguing properties like high resistance to diffraction and the ability to self-heal after hitting an obstacle. Despite this, their application in relativistic laser-plasma interactions is still quite rare. In this talk, I will present our recent work on Bessel-laser-driven high harmonic generation and proton acceleration, along with the generation method of relativistic Bessel-Gaussian pulses. Following that, I will shift gears to discuss directional electron acceleration driven by a 2D counterpart of the bessel beam: the Cosine-Gauss plasmon beam. Our findings clearly demonstrate the significant potential of Bessel-Gaussian beams to advance relativistic laser-plasma studies.
Biography:
Zi-Yu Chen is a professor at the College of Physics, Sichuan University. He received his Bachelor's degree from Peking University in 2007 and his Ph.D. from the Graduate School of China Academy of Engineering Physics (CAEP) in 2012. From 2014 to 2016, he did postdoctoral research at Heinrich Heine University Duesseldorf, Germany. Prior to joining Sichuan University in 2019, he was an Associate Researcher at the Institute of Fluid Physics, CAEP. His research primarily focuses on laser-plasma physics and strong-field optics. He has published over 40 journal papers. He has been recognized with the Excellent Undergraduate Teaching Award from Sichuan University and the Outstanding Reviewer Award from Ultrafast Science, among others.