Thermal field device for synchronously preparing crystal fibers and cladding and preparation method

Abstract

The invention provides a thermal field device for synchronously preparing crystal fibers and cladding. The thermal field device comprises a lower crucible, an upper crucible, a crucible supporting column and a cladding column mold, the upper crucible is located at the top of the lower crucible, and the lower crucible and the upper crucible are connected through a crucible supporting column; one end of the cladding column mold is located in the lower crucible and vertically penetrates through the upper crucible, and the other end of the cladding column mold is located above the upper crucible;wherein a crystal optical fiber feeding forming pipe and a cladding feeding forming pipe are arranged in the cladding column mold (mold), and the cladding feeding forming pipe is an annular pipeline and is annularly arranged outside the crystal optical fiber feeding forming pipe. The invention also provides a method for synchronously preparing the crystal fiber and the cladding. The device is simple in structure and low in cost, the cladding on the surface of the crystal fiber can be prepared while the crystal fiber grows, the production cost is greatly reduced, and the device preparation efficiency is improved; the prepared cladding is a single crystal cladding, can be in the same matrix as crystal fibers and can also be in different matrixes, and the single crystal cladding has more excellent physical and chemical properties.

Description

technical field [0001] The invention relates to the field of crystal growth, in particular to a thermal field device and a preparation method for synchronously preparing crystal fibers and cladding. Background technique [0002] Fiber laser has the advantages of small size, good heat dissipation, good beam quality, high electro-optical conversion efficiency, high output power, etc. It can be used in communication, metal and non-metal laser cutting, laser welding and other fields, and its application fields are very wide. The core component of a high-power fiber laser is the cladding laser fiber. [0003] At present, the traditional preparation process of cladding laser fibers is to grow crystal fibers independently first, and then prepare the cladding. The cladding is mostly glass cladding, quartz cladding, graphene cladding, etc. However, the independently prepared cladding has a different matrix from the crystal fiber, and the melting point and operating temperature of th...

AI Technical Summary

Problems solved by technology

However, the independently prepared cladding has a different matrix from the crystal fiber, and the melting point and service temperature of the cladding material are much lower than that of the crystal fiber. The thermal conductivity and thermal deformation of the crystal fiber and the cladding are different, and the cladding limits the crystal fiber. Heat dissipation; the above factors all reduce the output power, service life and continuous output time of the laser

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