Stabilizing isolated attosecond pulse formation by dispersion tuning

摘要

The carrier envelope phase (CEP) jitter of isolated attosecond pulses (IAPs) produced by high harmonic generation (HHG) is theoretically investigated based on the assumption that a significant contribution originates from the measurable CEP jitter of the driving laser pulses. By solving the time-dependent Schrodinger equation, it is demonstrated that the attosecond CEP jitter of IAPs is minimized when the driving pulse is near its Fourier limit but with slightly negative chirp. Although at present the utilization of the CEP of IAPs has limited applications, understanding and characterization of the CEP jitter of IAPs is the first step toward exact control of the electric field of extreme ultraviolet pulses. (C) 2018 Optical Society of America