Ultra-wide spectrum continuous picosecond pulse laser light source and laser generation method

Abstract

The invention relates to a wide-spectrum continuous picosecond pulse laser light source and a laser generation method, the wide-spectrum continuous picosecond pulse laser light source comprises a controller, and a seed laser diode, a plurality of amplification stages and a photonic crystal fiber which are connected in sequence, and the controller is connected with the seed laser diode and the plurality of amplification stages; wherein a plurality of editable repetition frequency parameters of the seed laser diode, amplification parameters of the amplification stage corresponding to each repetition frequency and a switching strategy of different repetition frequencies are stored in the controller, and the controller is used for selecting the repetition frequency of the seed laser diode as required and outputting a repeatable continuous spectrum. According to the invention, picosecond-level light pulses can be generated in an ultra-wide continuous spectrum range from 400 nm to 2100 nm, the output spectrum has the spatial characteristic and high brightness of laser, and meanwhile, the bandwidth characteristic of an incandescent lamp or a fluorescent lamp is provided. Through the arrangement of the invention, a repeatable output spectrum can be generated under all repetition frequencies, the output power is zero loss, and any optical pulse is not lost during output.

Description

technical field [0001] The invention relates to the field of spectrometer light sources, in particular to an ultra-wide-spectrum continuous picosecond pulsed laser light source and a laser generating method. Background technique [0002] The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. [0003] Supercontinuum white light is the process of converting short high-power laser pulses into a very broad continuous spectrum. Spectral broadening is usually achieved by propagating light pulses through strongly nonlinear materials such as bulk glass, waveguide structures, or photonic crystal fibers. Nonlinear effects depend on dispersion in the material. Supercontinuum white light source provides high spatial coherence and high br...

AI Technical Summary

Problems solved by technology

These discarded pulses cause significant loss in the system

Also using a mode-locked fiber laser in combination with an optical pulse picker is expensive to manufacture and there is no need for a system of this configuration if the system only operates at a repetition rate below the fundamental frequency of the fiber laser

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