title: Approaching the limits of carrier-envelope phase stability in a millijoule-class amplifier.
abstract: The demand for ever shorter light pulses presents a challenge to the detection and stabilization of the carrier-envelope phase (CEP) in amplifier systems. Here we present a combination of single-shot detection and a fast actuator that is capable of measuring and correcting the CEP in every single shot emitted by a millijoule-scale, multi-kHz femtosecond laser amplifier. The residual CEP noise within 50 s amounts to 98 mrad rms in-loop (fast detection, 5·10⁵ shots) and 140 mrad out-of-loop (slow detection, 6250 shots), approaching the noise floor of the f-to-2f measurement. Both values represent a twofold improvement of the CEP stability over previously published results in comparable systems.
authors: Fabian
authors: F
authors: Lücking
authors: Vincent
authors: V
authors: Crozatier
authors: Nicolas
authors: N
authors: Forget
authors: Andreas
authors: A
authors: Assion
authors: Ferenc
authors: F
authors: Krausz