Abstract:
Attosecond science enables direct observation of electron motion on its natural timescale. In this talk, I will present our recent progress in developing turn-key tabletop coherent extreme-ultraviolet (EUV) and isolated attosecond light sources driven by post-compressed ytterbium lasers. By combining cascaded postcompression and filamentation-assisted high-harmonic generation, we demonstrated isolated attosecond pulses in the sub-100-attosecond regime. I will discuss how waveform-controlled light fields enable studies of ultrafast electron, spin, and charge-transfer dynamics, as well as recent advances in EUV spectroscopy and metrology for probing quantum materials and strong-field physics.