High-repetition-frequency compact type industrial-level mode-locking optical fiber laser

Abstract

The invention discloses a high-repetition-frequency compact type industrial-level mode-locking optical fiber laser. Compact type split optical elements are adopted for packaging, so that the number of elements is reduced, the overall stability and reliability are improved, and improvement of repetition frequency can be facilitated; a phase bias technology is integrated in an optical path, so that starting difficulty of the laser is lowered, a lower mode-locking start threshold value is obtained, and the problem of difficulty in self starting of the laser is relieved; an optical fiber wavelength division multiplexing collimator is adopted to replace a conventional optical fiber wavelength division multiplexer and a conventional optical fiber collimator, so that coupling power and efficiency can be improved, and repetition frequency of the mode-locking laser can be effectively improved; and a faraday rotation mirror is adopted to replace a conventional optical fiber type isolator, so that the optical fiber length in the optical fiber laser can be shortened, the laser structure can be simplified and the number of the split elements in the laser can be reduced to the minimum.

Description

[0001] [technical field] [0002] The invention relates to a high repetition rate compact industrial-grade mode-locked fiber laser. [0003] [Background technique] [0004] Driven by fields such as spectroscopy, nonlinear optical imaging, and other research fields, the demand for ultrafast lasers has expanded in recent years. Especially in the rapidly growing industrial high-end micro-processing market in recent years, the demand for high-end picosecond and femtosecond lasers continues to grow. However, these fields represented by industry have put forward higher requirements for the stability of ultrafast lasers in different environments, and the stability and reliability of industrial ultrafast lasers, especially seed sources, have not been well established. solve. The use of fiber technology to replace the solid seed source technology itself has many advantages, and the use of full polarization-maintaining fiber lasers in fiber technology is considered to be an effective m...

AI Technical Summary

Problems solved by technology

[0008] The present invention overcomes the deficiencies of the above-mentioned technologies, and provides a compact industrial-grade mode-locked fiber laser with high repetition rate, which integrates phase bias technology in the optical path, reduces the difficulty of starting this type of laser, and obtains lower Mode-locked start-up threshold, which improves the self-start difficulty of this type of laser

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