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Optical fiber ultrashort pulse laser system based on flexible transmission output and assembly method of system

A technology of ultra-short pulse laser and flexible transmission, which is applied in the direction of lasers, laser components, phonon exciters, etc., can solve the problem that ultra-fast laser light sources are difficult to achieve flexible transmission output, and achieve easy chassis structure design and avoid nonlinearity Accumulation, volumetric weight reduction effect

Active Publication Date: 2021-04-16
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the ultrafast laser light source in the prior art is difficult to achieve flexible transmission output, and provides a fiber optic ultrashort pulse laser system based on flexible transmission output and its assembly method

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  • Optical fiber ultrashort pulse laser system based on flexible transmission output and assembly method of system

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Fiber ultrashort pulse lasers usually use chirped pulse amplification (CPA), that is, the high repetition rate seed source signal is first stretched by a chirped fiber grating stretcher for pulse time domain stretching, and then injected into a multi-stage fiber amplifier for energy amplification. The modulator reduces the repetition frequency of the laser, and the amplified low-repetition-frequency high-power laser has a large single-pulse energy. The laser signal is finally injected into the laser compressor to compress the pulse width in the time domain, and finally obtain high-power, large-scale Energy, high peak power ultrashort pulse laser output. The entire optical path of the system is usually integrated in a laser head, and the laser is output through an output window through spatial transmission.

[0025] The optical fiber u...

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Abstract

The invention relates to the field of ultrafast laser processing, in particular to an optical fiber ultrashort pulse laser system based on flexible transmission output and an assembling method of the optical fiber ultrashort pulse laser system, and aims to solve the problem that an ultrafast laser light source is difficult to realize flexible transmission output in the prior art. The system comprises a seed source, a pre-amplification module, a last-stage optical fiber amplifier and a laser compressor which are connected in sequence, wherein the last-stage optical fiber amplifier comprises a flexible gain optical fiber pulled out of the optical fiber amplifier, an optical fiber armored sleeve arranged outside the flexible gain optical fiber in a sleeving mode and an optical fiber end cap welded to the output end of the flexible gain optical fiber; the laser compressor is a movable laser compressor; and the optical fiber end cap of the last-stage optical fiber amplifier is fixedly arranged at the light inlet of the laser compressor.

Description

technical field [0001] The invention relates to the field of ultrafast laser processing, in particular to an optical fiber ultrashort pulse laser system based on flexible transmission output and an assembly method thereof. Background technique [0002] With the development of ultrafast fiber laser technology and the wide application of high-energy ultrafast fiber lasers in the field of industrial micromachining, the demand for high-performance ultrafast fiber laser sources in the ultrafast laser micromachining market is increasing day by day. Compared with ultrafast solid-state lasers, ultrafast fiber lasers have obvious advantages such as simple structure, stability and reliability, and low cost, so they are widely used in industrial processing. [0003] In ultrafast laser micromachining, the light source is required to have the function of optical fiber flexible transmission output for large-scale processing of large-volume workpieces. Because large-volume workpieces are ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/00
Inventor 李强龙李峰赵卫杨小君
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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