Laser spectrum power synthesis system and method

Abstract

The invention discloses a laser spectrum power synthesis system and method and relates to the field of laser spectrum power synthesis. The laser spectrum power synthesis system comprises a spectrum power synthesis module, a light sampler and a plurality of light source modules, wherein the light source modules are all coupled with the spectrum power synthesis module; the spectrum power synthesis module and the light sampler are coupled; the light sampler is coupled with the light source modules. Compared with a spectrum power synthesis system in the prior art, the laser spectrum power synthesis method based on sampling feedback effectively avoids the defect that manufacturing inconsistency of optical fiber bragg gratings causes high probabilities of spectrum mismatching and laser beam quality degradation and effectively improves the quality of synthesized laser beams, and compared with the conventional light source system adopting the single-frequency and phase modulation spectrum widening method, the laser spectrum power synthesis system provided by the invention is simple in structure and low in cost.

Description

technical field [0001] The invention relates to the field of laser spectral power synthesis, in particular to a laser spectral power synthesis system and method. Background technique [0002] High-quality and high-average power lasers working in continuous wave have important application value in the fields of industry, national defense and scientific research. Fiber lasers have the advantages of high efficiency, compact structure, high laser beam quality, flexible transmission, good heat dissipation, wide spectral range and maintenance-free, and have been widely used in many laser applications. However, due to factors such as nonlinear effects in the fiber and the brightness of the injectable pump source, the output power of a single fiber laser is limited to only a few thousand watts. In application scenarios that require higher power, it is an inevitable choice to use multiple fiber lasers for power combining. The specific technical approaches include geometric beam com...

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Problems solved by technology

[0004] However, the light source system based on the method of single-frequency laser plus phase modulation spectrum broadening is complex and costly, and is not suitable for large-scale systems, and the inconsistency of fiber Bragg grating pairs can easily lead to spectral mismatch and laser beam quality degradation

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