Method and system for generating a drive signal for an acousto-optic component for carrier envelope phase stabilization

摘要

Method for stabilizing a train (14) of short laser pulses (16) of the same time in terms of the carrier envelope phase of a laser signal (12) comprising the steps: generating a time-pulsed driver signal (72) for an acousto-optic component (70), wherein the drive signal (72) comprises a bandwidth limited frequency comb spectrum whose frequency components are coherent to the carrier envelope offset frequency by a repetition signal (36) whose frequency is the repetition rate of the laser pulses to be stabilized (16) or an integer harmonic of the repetition rate of stabilizing laser pulses (16), and a carrier envelope offset frequency signal (46) whose frequency spectrum comprises a frequency component which is coherent to the carrier envelope phase and the associated carrier envelope offset frequency derived from the laser signal (12), and using the repetition signal (36), an offset-free base frequency mmsignal (122) is generated with an offset-free frequency comb whose frequency comb line spacing of the repetition frequency of the laser pulses to be stabilized (16) or an integer harmonic of the repetition frequency of the laser pulses to be stabilized (16), wherein the driver signal (72) from the offset-free base frequency comb signal (122) wherein the deriving comprises bandpass filtering and correction blending with the carrier envelope offset frequency signal (46) or with a derived carrier envelope offset frequency coherent correction signal (185) operating the acousto-optic Component (70) with the drive signal (72), guiding the laser signal (12) with the train (14) of short laser pulses (16) to be compensated on the acousto-optic component (70) and effecting the carrier envelope phase correction, characterized in that the laser signal (12) with the train (14) of short laser pulses to be compensated (16) before being guided on the a opto-optically delaying the opto-optic device (70) to compensate for at least the group delay of the acoustic signal in the acousto-optic device (70) to an interaction zone with the laser signal (12).