Stabilization of the carrier-envelope phase (CEP) of femtosecond laser pulses has revolutionized the field of strong-field physics enabling the electronic response of matter to be controlled and measured within one optical cycle

The carrier envelope phase (CEP) jitter of isolated attosecond pulses (IAPs) is theoretically and experimentally investigated based on the assumption that a significant contribution originates from the measurable CEP jitter of the driving laser. By solving the time-dependent Schrödinger 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 towards exact control of the electric field of extreme ultraviolet (XUV) pulses.