Circulation device refrigerated by optical fiber integrally

Abstract

The invention relates to a circulation device used for the integral cooling of fibers in a superpower fiber laser, which is characterized in that the device comprises a fixed fiber heat conduction lower-plate, a fixed fiber heat conduction upper-plate, a cold plate and a water-cooling machine; the cold plate is a shell body provided with a water inlet and a water outlet, and cooling water passes through the shell body; the fixed fiber heat conduction lower-plate is close fixed on the cold plate; pinching screws are screwed in fixing holes of the fixed fiber heat conduction upper-plate and the fixed fiber heat conduction lower-plate to form a dismountable connection relation; doubly coated fibers of the superpower fiber laser are positioned between the fixed fiber heat conduction upper-plate and the fixed fiber heat conduction lower-plate; then the water inlet and the water outlet of the cold plate are communicated with the water-cooling machine through a water inlet conduit and a water outlet conduit so as to form a circulation passage for the cooling water. The circulation device leads the operation material that is the doubly coated fibers in the superpower fiber laser to realize the constant temperature refrigeration, to obtain stable and uprated laser output.

Description

technical field [0001] The invention relates to a high-power fiber laser, in particular to an optical fiber integral cooling circulation device for the high-power fiber laser. Background technique [0002] When the double-clad rare-earth-doped fiber is used for high-power laser output, the laser medium in the fiber is subjected to the thermal effect generated by the pump light, causing the temperature of the fiber to rise, resulting in a decrease in the quality and efficiency of the outgoing laser beam (see Wang, Y.Xu , C.Q. and Po, H. (2004) Thermal effects in kilowatt fiber lasers. Photonics Technology Letters, IEEE 16, 63-65.). Contents of the invention [0003] The purpose of the present invention is to realize that the double-clad rare-earth-doped fiber in the high-power fiber laser works in the normal temperature range, to ensure that the high-power fiber laser has better laser beam quality and efficiency when outputting high-power laser, and to provide a An optical...

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Problems solved by technology

[0002] When the double-clad rare-earth-doped fiber is used for high-power laser output, the laser medium in the fiber is subjected to the thermal effect generated by the pump light, causing the temperature of the fiber to rise, resulting in a decrease in the quality and efficiency of the outgoing laser beam (see Wang, Y.Xu , C.Q. and Po, H. (2004) Thermal effects in kilowatt fiber lasers. Photonics Technology Letters, IEEE 16, 63-65.)

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