Strong-field physics and the trajectory-based models

By Dr.Nikolay Shvetsov-Shilovskiy

Time: 14:00 pm, Apr. 18, 2019

Location: 603 Lecture Hall, Tang Aoqing Building

Hosted by: Institute of Atomic and Molecular Physics College of Physics

Abstract: Strong-field and ultrafast physics are promising research avenues resulting from remarkable progress in laser technologies during the last three decades. In accord with a commonly used definition, a "strong" laser field corresponds to the field strength comparable to that experienced by an electron in a hydrogen atom. The "ultrafast"  time scales correspond to a laser pulse length of the order of femtoseconds. In contrast to this, attosecond science studies quantum dynamics on the timescales less than a femtosecond. These timescales imply a great diversity of possible applications in science and technology. We briefly review these applications and discuss some nonlinear phenomena originating from the interaction of intense laser radiation with atoms and molecules. Semiclassical models that employ a classical description of an ionized electron are one of the well-known approaches in strong-field physics. We discuss trajectory-based simulations of various strong-field phenomena. Finally, we analyze the application of the semiclassical models to the strong-field holography with photoelectrons – a new approach to time-resolved molecular imaging.