Control device and method for improving stability of laser

Abstract

The invention relates to a control device and a method for improving the stability of a laser. The device comprises a reference clock used for generating a basic clock signal; a control unit used foroutputting a modulation pulse signal to an acousto-optic modulator according to a basic clock signal generated by the reference clock and a trigger signal input by an external control interface; and the acousto-optic modulator used for modulating and outputting a laser pulse according to the modulation pulse signal. The reference clock is connected with the control unit, and the control unit is connected with the acousto-optic modulator. Trigger signals which do not meet the requirements are filtered out. High-peak power optical pulses are prevented from being generated due to the fact that the frequency exceeds the range. Meanwhile, first laser pulses are prevented from being achieved by adjusting the duty ratio of modulation pulse signals, and the high-peak power optical pulses are prevented from being generated.

Description

technical field [0001] The invention relates to a control device and method for improving laser stability. Background technique [0002] At present, lasers have been widely used in cutting, drilling, marking and other fields. Domestic manufacturers of R&D and production of various types of lasers have sprung up like mushrooms. Under the premise of mature technology, the performance of lasers has received more attention, especially its stability. The stability of the laser is related to many factors, among which the performance of the electronic control system plays a key role. Since the frequency of the laser output light pulse is consistent with the frequency of the Trigger signal, in practical applications, most customers will tend to use an external Trigger control. For production and processing, this method has the advantages of strong flexibility, simple operation, and good controllability. The disadvantage is that if the user parameters are not set properly and the f...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, optical elements with high damage threshold can be selected during optical design and selection, so that they can withstand optical pulses with higher peak power. This method is theoretically feasible, but from the current optical element manufacturing process, domestic The technology still needs to be further broken through, and it will be relatively high in terms of production cost and maintenance cost

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