A laser pulse waveform modulation system

Abstract

The invention relates to the field of lasers, in particular to a pulse waveform modulation system of a laser. The system is composed of a first pulse input terminal inputting a first pulse type selection signal, a second pulse input terminal inputting a second pulse type selection signal, a third pulse input terminal inputting a third pulse signal with a variable frequency and a variable duty ratio, an exclusive-OR gate module, and an OR gate module; and the input terminal of the exclusive-OR gate module is connected with the first pulse input terminal and the second pulse input terminal and the output terminal of the exclusive-OR gate module outputs continuous wave enabling signals; and the output terminal of the OR gate module outputs a basic pulse signal. According to the pulse waveformmodulation system provided by the invention, digital modulation of the laser pulse is realized by using a programmable integrated circuit device, so that uncertain factors caused by the interferenceduring the pulse signal modulation process are reduced.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a laser pulse waveform modulation system. Background technique [0002] Lasers, especially high-power lasers, are indispensable components of laser light sources in laser processing systems. The current high-power laser processing has been widely involved in many fields such as laser cutting, laser welding, laser quenching, laser 3D printing, and laser cleaning. [0003] In many laser processing fields, lasers are required to be able to generate or modulate specific pulse types required by their processing technology. Common laser waveform types include: continuous pulse, gate pulse, strong pulse, super pulse, etc. For details, refer to figure 1 , figure 1 Interpretation for laser pulse modulation. For example, in the laser metal cutting process, it is required to start the perforation stage of the knife, and it is necessary to use a laser gate pulse or a strong pulse in the range of 10K...

AI Technical Summary

Problems solved by technology

[0005] 1. Separate components are built, the external circuit structure is complex, and there are many unstable factors;

[0006] 2. External circuit transmission operation affects the real-time performance of pulse modulation;

[0007] 3. The function of separating components is single, and some advanced functions cannot or are difficult to realize, etc.

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