Laser system phase information synchronization system and synchronization method

Abstract

The invention provides a laser system phase information synchronization system and a synchronization method. The laser system phase information synchronization system includes a primary phase information generating unit, a standard electrical signal generating unit, and one or more secondary phase information generating units; a standard electrical signal The generation unit is respectively connected to the main phase information generation unit and one or more secondary phase information generation units; the main phase information generation unit is connected to one or more secondary phase information generation units respectively. The invention can realize mutual locking and synchronization of the phases of two or more sets of laser systems, especially the optical frequency comb system.

Description

technical field [0001] The invention belongs to the field of laser technology, and relates to a laser system phase information synchronization system and a synchronization method, in particular to a laser system phase information synchronization system and a synchronization method capable of phase linkage and synchronization. Background technique [0002] After the femtosecond laser is frequency-locked and carrier-phase-locked, it can generate time-domain ultrashort pulse signals with very stable interval, amplitude and power. The pulse sequence has a rich Fourier transform spectrum, which can realize microwave frequency and optical Frequency direct connection. Direct absolute measurement of all optical frequencies from the near-infrared to the visible region can be realized with a single mode-locked femtosecond pulsed laser. This achievement is recognized as a revolutionary breakthrough in the field of optical frequency measurement. Comb optical frequency generator based o...

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Problems solved by technology

[0004] 1) When testing on the ground, it is necessary to accurately measure large and super-sized equipment and devices. Factors such as the disturbance of the air refractive index and the temperature change in different areas have a great impact on the distance measurement accuracy, and corresponding compensation cannot be made. ;

[0005] 2) When a single fiber optic comb is used for distance measurement, the amount of data is large, and it is difficult to achieve real-time measurement;

[0006] 3) Even if dual or multi-combs are used, there is a problem of out-of-synchronization of frequency and phase, resulting in measurement errors

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