Laser energy control method and system

Abstract

The invention discloses a laser energy control method. The method comprises the following steps that first pulse signals are output to a laser to enable the laser to be in the preheating state; after delay time t, second pulse signals are output to the laser, and the laser starts to give out light; after fluorescent time t2, the second pulse signals are stopped from being output to the laser to enable the laser to be in the preheating state; after preheating time t1, the first pulse signals are stopped from being output to the laser; the equation t1=2*t+t2 is met; therefore, in the material processing process, the laser gives out light only when the first pulse signals and the second pulse signals play roles at the same time, and at the moment, the power of the laser is the highest. When only the first pulse signals exist, the laser is only in the preheating state and will not have influences on the processed materials. In this way, the phenomena that due to the fact that processing power is not high, the processing efficiency is influenced, and the processed edges of the processed materials are scorched and carbonized can be avoided. The invention further provides a laser energy control system.

Description

technical field [0001] The invention relates to laser energy control, in particular to an efficient and high-power laser energy control method and system. Background technique [0002] In the current laser energy control, the general control method is that the laser starts to emit light when the modulation pulse is output, and the laser stops emitting light when the modulation pulse ends. The laser power in the entire laser light-emitting cycle is very low, and it needs to be processed at one position repeatedly, which will cause the edge of the processed material to be burnt and charred, which cannot meet the continuous improvement of processing technology requirements. as attached figure 1 As shown, the light emitting cycle includes the beginning stage of Gaussian light energy rising slowly and the stopping stage of energy falling slowly. These two stages occupy a large proportion of time in the entire laser light emitting cycle, resulting in low laser power and seriously...

AI Technical Summary

Problems solved by technology

The laser power in the entire laser light-emitting cycle is very low, and it needs to be processed repeatedly at one position, which will cause the edge of the processed material to be burnt and carbonized, which cannot meet the continuous improvement of processing technology requirements

as attached figure 1 As shown, the light emitting cycle includes the beginning stage of Gaussian light energy rising slowly and the stopping stage of energy falling slowly. These two stages occupy a large proportion of time in the entire laser light emitting cycle, resulting in low laser power and seriously affecting Processing efficiency, resulting in burning and carbonization of the processing edge of the processing material

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