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Spectrum synthesis method and device

A synthesis method and synthesis device technology, applied in optics, optical components, instruments, etc., can solve problems such as the inability to guarantee the beam quality, and achieve the effect of reducing the occupied space and setting the space reasonably

Active Publication Date: 2020-09-22
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The present invention aims to solve the technical problem in the prior art that the spectrum synthesis method has only dozens of channels and cannot guarantee the beam quality of the final spectrum synthesis, and provides a spectrum synthesis method and device

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  • Spectrum synthesis method and device

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Embodiment Construction

[0044] In order to make the purpose, advantages and features of the present invention more clear, a spectral synthesis method and device proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will be more clear from the following specific embodiments. It should be noted that: the drawings are all in a very simplified form and use inaccurate proportions, which are only used to facilitate and clearly illustrate the purpose of the embodiments of the present invention; secondly, the structures shown in the drawings are often actual structures part.

[0045] The working principle of the present invention is: use tunable technology to split the broad-spectrum super-fluorescent light source, realize hundreds of seed laser splits, and realize the kilowatt narrow-linewidth fiber laser output through the adjustable filter power amplification c...

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Abstract

The invention discloses a spectrum synthesis method and device, and aims to solve technical problems that in the prior art, the number of paths synthesized by a spectrum synthesis method is only dozens of, and the quality of a light beam finally synthesized by a spectrum cannot be guaranteed. The method is characterized in that a tunable technology is adopted to segment a wide-spectrum super-fluorescence light source, hundreds of paths of seed laser segmentation are realized, a tunable filter power amplification assembly is used for outputting fiber laser with narrow linewidth of thousands ofwatts, a diffraction grating and a dense fiber array are used for realizing spectrum synthesis, a part of light is divided into reference light, spectrum conversion is carried out through a front-section tunable technology, final feedback control establishment is realized, and the final light beam quality is ensured. The spectrum synthesis method is advantaged in that dozens of paths or even hundreds of paths of spectrum synthesis can be achieved in a limited space, light beam quality degradation caused by external factors such as temperature, humidity and jitter is overcome by establishing areal-time feedback control system, and the action effect of spectrum synthesis is guaranteed.

Description

technical field [0001] The invention relates to spectrum synthesis of high-power and high-beam-quality optical fiber laser output, in particular to a spectrum synthesis method and device. Background technique [0002] Spectrum synthesis technology uses dispersive optical elements to synthesize fiber lasers of different wavelengths into one laser output. Because of its simple structure, strong expandability, good quality of synthesized beams, and no need for complicated adjustments, it is currently the best way to achieve high-brightness, high-power optical fiber Efficient technological approach to laser systems. [0003] In the existing technology, in order to ensure the beam quality of the spectral combination beam, the linewidth of each laser must be less than 35 GHz, but due to the influence of stimulated Brillouin scattering, self-phase modulation, mode instability and other problems, the single narrow linewidth It is difficult to increase the output power of fiber lase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/10
CPCG02B27/1006G02B27/1086
Inventor 高奇李刚李哲刘红军王昭路黄楠赵卫
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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