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All-fiber laser system and method for generating soliton burst mode

A laser system and fiber laser technology, applied in the laser field, can solve the problem of difficulty in directly outputting burst mode soliton pulses, and achieve the effects of easy implementation, good beam quality, and simple debugging

Active Publication Date: 2019-08-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem that it is difficult to directly output burst mode soliton pulses in existing fiber lasers, and propose an all-fiber laser system and method for generating soliton burst modes

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  • All-fiber laser system and method for generating soliton burst mode

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Embodiment Construction

[0032] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0033] The present invention provides an all-fiber laser system for generating soliton burst modes, such as figure 1 As shown, it includes sequentially connected passive mode-locked fiber laser 1, isolator 2, fiber amplifier 3, photonic crystal fiber 4, programmable optical filter 5, first single-mode fiber 6, coupler 7, and second single-mode Fiber 8.

[0034] In the embodiment of the present invention, the passive mode-locked fiber laser 1 is an ytterbium-doped mode-locked fiber laser operating in the net positive dispersion region, and the output is a dissipative soliton pulse, and its pulse time-domain shape is Gaussian, and the corresponding spectral shape is approximately rectangular , the central wavelength λ of the output pulse is: 1060nm, and the output pulse repetition frequency is in the order of MHz.

[0035] The isolator 2 is a polarizatio...

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Abstract

The invention discloses an all-fiber laser system and method for generating a soliton burst mode and aims to solve the technical problem that it is difficult for a conventional fiber laser to directlyoutput a burst-mode soliton pulse. The system includes a passive mode-locked fiber laser (1), an isolator (2), an optical fiber amplifier (3), a photonic crystal fiber (4), a programmable optical filter (5), a first single-mode fiber (6), a coupler (7) and a second single-mode fiber (8) which are successively connected. The all-fiber laser system is simple and compact in structure and good in stability, achieves, by adjusting the filtering bandwidth and the filtering wavelength interval of the programmable optical filter (5), a controllable pulse number inside a soliton cluster and a continuously adjustable pulse repetition frequency at the order of GHz, greatly reduces system cost, can be directly applied to the field of micromachining, and can also be used as a seed source for a high-energy pulse amplifier.

Description

technical field [0001] The invention belongs to the field of laser technology, and in particular relates to the design of an all-fiber laser system and method for generating burst-mode soliton pulses. Background technique [0002] Due to the advantages of good beam quality, high peak power, and short laser-material interaction time, ultrashort pulse fiber lasers are widely used in laser marking, laser micromachining, laser rust removal, and pulsed laser deposition. [0003] Depending on the material and processing requirements, the performance requirements for the single pulse energy, pulse width, and repetition frequency of the laser beam are also different. In high-precision micromachining applications, the researchers propose to use laser pulses operating in soliton burst-mode to reduce the rate at which materials emit heat, thereby improving ablation efficiency. The soliton burst mode refers to a soliton cluster pulse with a repetition frequency in the order of MHz, and...

Claims

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Application Information

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IPC IPC(8): H01S3/00H01S3/067H01S3/11
CPCH01S3/0057H01S3/06741H01S3/1112
Inventor 杜文雄李和平王壮李俊文张旨遥刘永
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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