A high-power fiber laser fiber output flexible double-tube water cooling device

Abstract

The invention discloses a high-power fiber laser fiber output flexible double-tube water cooling device, which is connected between the adapter and the output head, and includes two flexible tubes and three three-way joints, the first end of the three-way joint and the second The first end is a straight-through end, the third end is a bypass end, the first end of the first three-way joint is connected to the adapter, and the second end is connected to the second end of the second three-way joint through the first flexible pipe , the first end of the second three-way joint is connected to the output head, the third end is connected to the second end of the third three-way joint through the second flexible tube, the first end of the third three-way joint is connected to the Adapter connection, the third end of the first three-way joint is used as the cold water inlet, and the third end of the third three-way joint is used as the cold water outlet. The invention uses a water cooling circuit as the cooling device for the fiber output of the fiber laser, and the fiber at the output section is directly soaked in the cold water in the flexible tube, realizing continuous cooling of the fiber, and its cooling effect is significantly improved.

Description

technical field [0001] The invention relates to a cooling device for an optical fiber in the last output section of a fiber laser, in particular to a flexible double-tube water cooling device for outputting a fiber of a high-power fiber laser. Background technique [0002] Lasers are classified according to the pumping medium, mainly gemstone lasers, carbon dioxide lasers, fiber lasers, etc. Among them, the fiber laser is an all-solid-state laser with optical fiber as the pump and gain medium. Compared with other types of lasers, it has many advantages such as good beam quality, long life, high conversion efficiency, and maintenance-free. It is widely used in national defense, manufacturing, and medical treatment. and other fields. [0003] Due to the inevitable loss of fiber materials, one of the biggest problems of high average power fiber lasers is the heat dissipation of the fiber. At present, the method of fixing the fiber with a water-cooled plate is mainly used to re...

AI Technical Summary

Problems solved by technology

This method has the following defects: due to the low demand for small-diameter and ultra-small-diameter corrugated pipes and the difficulty in manufacturing them, the price is high and the cost is increased; the optical fiber is packaged in the corrugated pipe, and it does not achieve close and continuous contact with the corrugated pipe , the heat conduction effect is not good, which affects its heat dissipation effect, and the phenomenon of fiber heating is still common under high power conditions, and the laser life is short

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