A Dual-wavelength Synchronized Pulse Fiber Laser Based on Rare Earth Ion Co-doped Fiber

Abstract

The invention is applicable to the field of laser technology, and provides a dual-wavelength synchronous pulse fiber laser based on a rare earth ion co-doped fiber, including a continuous light LD pump source, a rare earth ion co-doped fiber and a resonant cavity, the continuous light LD pump The source is connected to the resonant cavity, and the rare earth ion co-doped optical fiber is located in the resonant cavity; the sensitized ions in the rare earth ion co-doped optical fiber absorb the pump light, and a laser with a wavelength is generated by the sensitized ion radiation, At the same time, laser light of another wavelength is generated by the sensitized ion radiation in the rare earth ion co-doped optical fiber; the laser light of the sensitized ion radiation is modulated by using a saturable absorber inserted in the laser cavity of the sensitized ion radiation Q or mode-locking makes it generate pulsed laser. This process periodically modulates the gain of the sensitized ion radiation laser and generates synchronous pulsed laser, thereby realizing a dual-wavelength synchronous pulsed fiber laser. The device provided by the invention can be highly integrated and can realize an all-fiber structure.

Description

technical field [0001] The invention belongs to the field of laser technology, in particular to a dual-wavelength synchronous pulse fiber laser based on a rare earth ion co-doped fiber. Background technique [0002] Dual-wavelength lasers have a wide range of applications in the generation of sum frequency / difference frequency, remote sensing, laser ranging, medical purposes, etc., especially dual-wavelength synchronous pulse laser has the advantages of large pulse energy and high peak power synchronous dual-wavelength pulse output , so that it has a better practical application effect. Compared with traditional solid-state lasers, fiber lasers have attracted much attention due to their outstanding advantages such as good heat dissipation, high conversion efficiency, low threshold, good beam quality, and easy integration. At present, there are three main methods of using fiber lasers to realize dual-wavelength synchronous pulse laser output: [0003] 1. Realize dual-wavele...

AI Technical Summary

Problems solved by technology

At present, the cascading of holmium-doped or erbium-doped fluoride fibers is mainly used to generate dual-wavelength lasers. However, it is difficult to fuse fluoride fibers with silica fibers, which limits the full-fiberization of lasers, and this method currently only achieves wider pulse widths. Dual-wavelength synchronous Q-switched-gain switch pulse output

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