Laser, optical equipment and production method

Abstract

The invention provides a laser which comprises the components of a pumping source which is used for generating pumping light, and the pumping light is any single wavelength and / or wave band with the wavelength of 900-960 nm; the resonance module is used for absorbing the pump light, generating oscillation and outputting first signal laser; the resonance module comprises a high-reflection element, a low-reflection element and an ytterbium-doped optical fiber located on a light path between the high-reflection element and the low-reflection element; the reflectivity of the low-reflection element is smaller than that of the high-reflection element; wherein the pumping source is used for carrying out fiber core pumping on the ytterbium-doped optical fiber, and the first signal laser wavelength comprises any number of single wavelengths and / or wave bands between 970 nm and 1000 nm. According to the laser, the laser output efficiency can be improved, and 970nm-1000nm signal laser output can be realized by a single-mode tail fiber.

Description

technical field [0001] The invention relates to a laser, an optical device and a production method, in particular to a short-wavelength ytterbium-doped fiber laser output from a high-power single-mode pigtail. Background technique [0002] The technology of generating or amplifying laser light by pumping ytterbium-doped and erbium-doped fibers has been continuously studied. However, the current single-mode 980nm pump sources for pumping ytterbium-doped and erbium-doped fibers have low output power, low laser efficiency, and low fiber production. Difficulty and difficulty in outputting high-power single-mode pigtails. [0003] First of all, the current method of generating single-mode laser near 980nm is to use a single-mode 980nm fiber-coupled semiconductor laser, but its output power is below 1.2W, which can no longer meet the needs of all-fiber single-frequency narrow-linewidth fiber lasers and ultrafast fiber lasers. The development needs of precision laser technology su...

AI Technical Summary

Problems solved by technology

The above-mentioned scheme is mainly based on improving the structural design of the ytterbium-doped fiber to improve the laser efficiency, but at the same time, there are also difficulties in matching with passive fiber devices, complex fiber structures, difficult fabrication, reduced beam quality, and a large amount of remaining pump light, which affect practical applications. Shortcomings

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