Realizing the Promise of Attosecond Science: All-Attosecond Spectroscopy

Abstract

Attosecond pulses generated through mhigh-harmonic generation (HHG) have been instrumental in studying ultrafast dynamics on the shortest timescales over the past few decades.

However, the HHG process is inherently inefficient, and conventional XUV optics cause further signal loss. As a result, most attosecond spectroscopy experiments to date have relied on attosecond XUV pulses combined with near-infrared fields, limiting temporal and spectral flexibility.

This PhD work demonstrates the first HHG-based all-attosecond transient absorption spectroscopy experiments. The work also introduces the first plasma-based lens for focusing XUV attosecond pulses.