Laser tunnel furnace light beam micro-integration focusing method and device

Abstract

The invention discloses a laser tunnel furnace light beam micro-integration focusing method and device. The method comprises the followings steps: generating laser light through a high-power laser emitter, wherein the diameters of light spots are adjustable; introducing laser beams into a multi-pass spectrometer for uniformly splitting a single laser beam into a plurality of laser beams which are equal in energy and light spots; introducing the laser beams into a laser beam emitting head through an optical fiber, wherein the laser beam emitting head is fixed on a bracket; the extension line of the axis of an installing hole in the bracket intersects with the shaft core of a carbon fiber; a plurality of laser beams are focused on the carbon fiber passing through the center of the bracket. According to the laser tunnel furnace light beam micro-integration focusing method and device, a plurality of laser beams which are equal in energy and light spots are generated through the integration function of the multi-pass spectrometer, so that the problem of high cost caused by the use of a plurality of laser generators is solved. The laser emitting head bracket has a special structure, so that circumferential focusing of the laser beams is ensured, the aim of uniformly heating the carbon fiber in the circumferential direction is further fulfilled, and the problem of energy loss caused by lens focusing is solved.

Description

technical field [0001] The present invention relates to a laser beam focusing method and device, in particular to a laser beam calculus that can realize circumferential focusing of high-power laser beams to conduct instantaneous circumferential uniform heating on carbon fibers, and can realize high-efficiency utilization of laser energy. Focusing method and device. The invention belongs to the field of spatial form adjustment of laser beams. Background technique [0002] Since the American scientist Maiman obtained the first laser beam in 1960, the laser has been widely used in various technical fields because of its excellent monochromaticity, extremely small divergence, and high brightness (power). Heating technology is one of the important laser application technologies. Moreover, laser heating technology has overcome a series of shortcomings such as low energy utilization rate, low maximum temperature, difficult heating temperature control and serious pollution of trad...

AI Technical Summary

Problems solved by technology

However, this method has defects such as high cost, complicated fixtures, high failure rate, and complicated control and operating procedures, which have become a bottleneck hindering the popularization and application of laser heating technology.

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