Dr. Michael Chini
University of Central Florida
Attosecond Electronics: Laser Waveform Control of Electron Dynamics in Materials
Location: 1080 Physics Research Building, Smith Seminar Room
Faculty Host: Louis DiMauro
Abstract: The ability to synthesize and control the electric field of light with sub-optical-cycle precision has, in the last two decades, enabled the first generation of isolated attosecond pulses and provided access to the ultrafast dynamics of electrons in gas-phase atoms and molecules. Now, the transition of few-cycle laser sources and optical metrology from the near- to the mid-infrared has ushered in a new era of attosecond electronics, in which tailored laser waveforms are used to drive nonlinear photoexcitation and control coherent electronic currents in solid materials. In this talk, I will describe the toolbox of attosecond electronics: a few-cycle laser “function generator” and “optical oscilloscope”, both operating in the mid-infrared, and highlight how they allow control over laser-driven currents in multiple conduction bands of ZnO as well as valley polarization in monolayer MoS2.
Bio: Mike Chini is an Associate Professor of Physics, with a secondary joint appointment in CREOL – the College of Optics and Photonics, at the University of Central Florida (UCF). His research focuses on experimental strong-field physics and attosecond dynamics, and involves many aspects of laser science ranging from the development of laser and secondary sources, nonlinear optics, ultrafast metrology, and intense laser-matter interactions. Mike received his BSc in Physics from McGill University in 2007 before beginning graduate school at Kansas State University, where he worked in the J. R. Macdonald Laboratory. He later moved to UCF, where he completed a PhD in Physics in 2012. He remained at UCF as a Postdoctoral Scholar in the group of Zenghu Chang and as a Research Scientist in the group of Martin Richardson before starting as Assistant Professor in 2015. Mike is the recipient of an Air Force Office of Scientific Research Young Investigator Program Award, the Department of Energy Early Career Research Award, and the Oak Ridge Associated Universities Ralph E. Powe Junior Faculty Enhancement Award. He also serves as UCF’s point of contact for LaserNetUS, a national network of high-intensity laser facilities.