Characterization of amplified femtosecond pulses for quantum control

摘要

Abstract: We discuss the use and importance of phase-sensitive pulse diagnostics for the optimization of ultrafast lasers and for implementing quantum control. Knowledge of the exact phase structure is needed in order to determine the phase and amplitude transformations that are required to produce a desired tailored pulse. A special case of pulse shaping is the phase and amplitude compensation of amplified pulses to yield transform-limited pulses. Full intensity and phase measurements of a kHz amplified femtosecond laser system are presented. These measurements provide considerable information about the phase structure which is acquired during amplification and the changes needed to minimize the pulse width. In addition, a versatile light pulse synthesizer which is currently under development is described for producing amplified femtosecond pulses tailored in phase and amplitude. !13