Method and device for time synchronization of picosecond and subpicosecond laser pulses

摘要

The signal and pump laser beam of the relative delay of this method and device for clock synchronization picosecond and subpicosecond laser pulse by feedback control loop based on measurement pulse, use their interaction, in nonlinear dielectric, synchronously control is intended in the part of laser beam, which separately (1a/1b) immediately enters for impulsive synchronization (A-B) before the interaction of main laser beam. The polarization (2a/2b) of separation light beam is conditioned the segment beam delay fixation for subsequent optical element and a polarizer and restriction mode (3 τ). Two divided beams of two polarizers, interacting corresponding to selected OPA, then being directed toward at least one Anisotropic Nonlinear medium shows OPA 4x/4y simultaneously together) (what wherein overtone signal beam amplified generates phenomenon with above-mentioned not busy wave. Then measurement measurement and the signal wave of two pulse polarizers of more each brightness and/or not busy wave (5x/5y) and it is based on the assessment, synchronizing for the feedback loop is implemented (A ~ B). From laser oscillator (1) chirp femtosecond pulse probe (8) export and pump pulse (9). Shake is stablized being performed between the two pulses and is amplified by means of controlled delay line (4) and above-mentioned pump pulse in subsequent regenerative amplifier (2). The pump pulse (10) and probe pulse of a part amplification are related to OP-CPA (3). Remaining is directed toward shake stabilization system (6). The system includes the pump pulse for controlling two polarized components amplification than MZI, these parts are then overlapped the relative delay being used as between parameter and stabilse with the idle pulley of the intensity of direct impulse and OPA generations and amplify pump pulse and above-mentioned probe pulse, pass through control pump delay line (4).