Speaker: Yaguo Tang, OSU
Program Description:
The core principle behind strong field phenomena is the process where electrons, freed by an intense laser field, are driven to collide again. This process, also referred to as the three-step model, results in the generation of attosecond radiation bursts, high-energy electrons, and ions with multiple charges. Traditionally, these phenomena have been interpreted where individual electron orbits are coherently summed. In this talk, I will discuss our recent work on the quantum trajectory selector (QTS), a method designed to isolate and examine individual quantum trajectory. Utilizing an XUV attosecond pulse train with a specially tailored bandwidth, we generate near-zero energy electron wave packets that simulate the initial conditions of tunnel ionization. This allows us to accurately determine the moment of electron continuum entry and analyze the subsequent rate of electron emission and double ionization, driven by a synchronized near-infrared field. The QTS offers an innovative framework for enhancing our comprehension of recollision-driven physics.
