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《科学前沿报告会》 第466期

科学前沿报告会(466)

报告题目

Semiclassical models in strong-field, ultrafast, and attosecond physics

报 告 人

Dr. Nikolay Shvetsov-Shilovskiy

Leibniz University Hanover

报告地点

物理楼中楼212室

报告时间

2019年4月15日(周一)下午14:30 - 16:00

联 系 人

刘运全(62768852)

报告摘要

Strong-field and ultrafast physics, as well as the attosecond science, are new and promising research avenues. They result from remarkable progress in laser technologies during the last decades. A "strong" field corresponds to the field strength comparable to the one experienced by an electron in a hydrogen atom. The "ultrafast" time scales typically refer to laser pulses of femtosecond duration. Attosecond physics studies dynamics of physical systems on the timescales that are less than a femtosecond. These time scales imply a number of possible applications in modern science and technology. We discuss these applications, as well as some important nonlinear phenomena originating from the interaction of intense laser radiation with atoms and molecules, including above-threshold ionization, generation of high-order harmonics, nonsequential double ionization, etc. Semiclassical models applying a classical description of an electron after it has been released from an atom are one of the main theoretical approaches of strong-field physics. We overview semiclassical approaches to the main strong-field phenomena. Furthermore, we discuss the application of the trajectory-based models to the strong-field photoelectron holography - a new technique for time-resolved molecular imaging.

 

报告人简介:Advanced researcher at Institute for Theoretical Physics, Leibniz University Hanover, Hanover, Germany. He worked in the field of atomic and molecules in strong laser fields. He has published in over 30 papers on international Journals.

 

 

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