Method of and device for time synchronization of picosecond and sub-picosecond laser pulses

摘要

Method and apparatus for time synchronization picosecond and sub-picosecond laser pulses through feedback based on the measurement of relative delay of the pulse signal and pumping of the laser beam with the use of their interactions in a nonlinear medium, where the sub-laser beams designed for controlling synchronization mooring (1a / 1b) of the primary laser beam just before entering the interaction, which is subject to synchronization (A ~ B). Adjust the plane of polarization follows Freed bundles (2a / 2b) with respect to the subsequent optical elements and one of the sub-beams are defined by time and constant delaying one of the components of polarization (3.tau.). Subsequently, always two selected type of interaction opa corresponding components of polarization of the two sub-beams are brought together simultaneously and at least one anisotropic nonlinear medium exhibiting phenomenon OPA (4x / 4y) in which there is partial amplification of the signal beam and the generation of reactive waves. Subsequently, the measuring element is measured individually and compares the intensity of both components of the polarization of the pulse wave signal and / or a reactive pulse wave (5x / 5y) and based on the evaluation is automatically implements a feedback loop for synchronizing (A ~ B).