Random fiber laser generating method and system

Abstract

The invention provides a random fiber laser generating method and system. The random fiber laser generating system comprises an excitation light generation subsystem and a random fiber laser resonantcavity, wherein the excitation light generation subsystem generates two paths of excitation light with stable time domain; the two paths of excitation light with stable time domain are injected into the random fiber laser resonant cavity from the forward direction to the backward direction separately; and the random fiber laser resonant cavity performs random fiber laser generation depending on distributed raman gain and random rayleigh scattering feedback under the pumping of excitation light. The excitation source with the stable time domain is adopted for pumping a random raman fiber laserto inhibit high-order raman stokes random fiber laser and output laser noise, high-power and low-noise random fiber laser output is achieved, and a new idea is provided for the design of optical fibersources in the fields of multi-point detection, optical fiber sensing, optical imaging and the like.

Description

technical field [0001] The invention belongs to the technical field of strong laser and nonlinear fiber optics, and in particular relates to a high-power, low-noise random fiber laser generation method and system. Background technique [0002] The laser originates from the stimulated radiation process of the atomic system to produce a large number of homomorphic and ultra-high degeneracy photon states, and then realizes a system with good directivity, high monochromaticity, high coherence, and high brightness laser output. Generally speaking, the excitation source, laser working substance, and resonant cavity are the three major elements that constitute a laser. Among them: the excitation source is used as the pumping light to pump the working material of the laser to realize particle number inversion, and the resonant cavity realizes self-excited oscillation and gain greater than loss conditions to realize laser oscillation. For fiber lasers, different types of lasers such...

AI Technical Summary

Problems solved by technology

However, high-order Raman-Stokes stochastic fiber laser suppression methods relying on novel fiber designs are technically complex, difficult to implement, and expensive

In addition, high-power random Raman fiber lasers that take into account high-order Raman-Stokes random fiber lasers and output laser noise suppression have not yet been reported.

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