Double-clad fiber cladding light stripping heat radiation device based on chemical etching method

Abstract

The present invention discloses a double-clad fiber cladding light stripping heat radiation device based on a chemical etching method. The device comprises a double-clad fiber, a heat conduction metalhousing and a quartz glass tube. A corrosion portion of a double-clad fiber is arranged at the center of the quartz glass tube and is fixed, and the heat conduction metal housing sleeves the outer wall of the quartz glass tube, and two ends of the heat conduction metal housing are fixed. The stripping degree of the double-clad fiber is increased by degrees, the stripping degree of a first sectionis 30%, the stripping degree of a second section is 50%, and the stripping degree of a third section is above 99%. The double-clad fiber cladding light stripping heat radiation device based on the chemical etching method performs subsection stripping of absorbed residual cladding light to achieve thorough stripping of the cladding light, temperature is uniformly distributed, a bearing power of the device can reach above 100% through adoption of water cooling, there is no loss for fiber core light, and therefore good output light beam quality is ensured.

Description

technical field [0001] The invention belongs to optical fiber laser devices, and in particular relates to a double-clad optical fiber cladding optical stripping heat dissipation device based on a chemical etching method. Background technique [0002] In 1988, Snitzer and others proposed a double-clad fiber. With the development of high-power semiconductor laser pumping technology in recent years, the output power of fiber lasers has been significantly improved. The output power of a single fiber has been increased from a few hundred milliwatts at the beginning to Kilowatt or even 10,000 watt levels are also widely used in medical, industrial processing and military fields. The double-clad fiber with large mode field can better ensure the input of higher power pump light. The pump light repeatedly passes through the ytterbium-doped fiber core to absorb it and generate stimulated radiation. After the high-power pump light is transmitted through the ytterbium-doped fiber, ther...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a double-clad optical fiber cladding light stripping heat dissipation device based on chemical etching method, which overcomes the problem that the stripping degree of the prior art cannot meet the high requirements, and it is difficult to realize the absorption and heat conduction treatment of the stripped light

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