Fiber laser system and method for generating pulse laser light

Abstract

The invention provides a fiber laser system including a fiber laser unit, a laser detection device and a control device. The fiber laser system includes a fiber laser, a laser light detecting apparatus, and a control apparatus. The fiber laser outputs a laser light including a noise-like pulse laser light, a mode-locked pulse laser light, or a continuous-wave laser light. The laser light detectingapparatus consists of a lens and a photodiode. The photodiode absorbs the laser light outputted from the fiber laser and generates an output signal in terms of a two-photon absorption effect. The control apparatus reads the output signal of the photodiode and automatically adjusts the fiber laser, according to a preset value, to obtain the noise-like pulse laser light or the mode-locked pulse laser light. The invention also provides a pulse laser generation method.

Description

technical field [0001] The invention relates to a fiber laser, in particular to a fiber laser system and a pulse laser generating method, which can automatically output selected pulse laser. Background technique [0002] The importance of ultrafast laser sources in industry, academic research, and medical applications is increasing day by day, so users' demands for stable and reliable pulsed laser sources are also increasing. [0003] Fiber laser has the advantages of small size, light weight, good heat dissipation, good beam quality, and high energy conversion efficiency. Therefore, fiber laser has gradually been paid attention to as a picosecond and femtosecond pulse light source. [0004] Fiber lasers are operable to generate modes including mode-lock pulses and noise-like pulses. Among them, noise-like pulses have been proven to perform well in optical coherence tomography (OCT) and laser-induced breakdown spectroscopy (LIBS). [0005] The traditional method needs to m...

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