Burst pulse height adjustable control method and system
A pulse height and control method technology, applied in the field of Burst pulse height adjustable control methods and systems, can solve the problems of not meeting the processing technology requirements, the aperture being conical, etc.
Pending Publication Date: 2022-05-31
武汉华锐超快光纤激光技术有限公司
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Problems solved by technology
[0004] The present invention aims at the technical problem existing in the prior art that when the naturally amplified Burst pulse envelope acts on the material to be processed, the aperture will be tapered and not meet the processing requirements of the same upper and lower taper of the aperture.
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[0030] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0031] Such as figure 1 Shown, a kind of Burst pulse height adjustable control method provided by the present invention comprises the following steps:
[0032] S1, acquiring a seed light pulse signal, and using the corresponding seed clock signal as a clock reference;
[0033] S2, the control circuit selects and outputs a corresponding control signal according to the clock reference and the set parameters, so as to perform AOM modulation processing on the seed electric pulse signal to obtain an AOM modulation signal;
[0034] S3, first input the AOM modulation signal to the acousto-optic drive circuit to select the Burst optical pulse, and then input it to the optical am...
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The invention belongs to the technical field of laser pulse control, and particularly provides a Burst pulse height adjustable control method and system, and the method comprises the steps: obtaining a seed light pulse signal, and taking a corresponding seed clock signal as a clock reference; the control circuit selectively outputs a corresponding control signal according to the clock reference and set parameters so as to perform AOM modulation processing on the seed electric pulse signal to obtain an AOM modulation signal; and inputting the AOM modulation signal into an acousto-optic driving circuit to select a Burst optical pulse, and then inputting the Burst optical pulse into an optical amplification module for amplification to obtain a Burst pulse envelope signal of which the frequency, the pulse number and the sub-pulse height are consistent with those of a control signal output by a control circuit. According to the scheme, the function of adjusting the Burst pulse of the femtosecond pulse fiber laser is realized.
Description
technical field [0001] The present invention relates to the technical field of laser pulse control, and more particularly, to a control method and system with adjustable Burst pulse height. Background technique [0002] In modern material processing methods, femtosecond laser has opened up a new way for material processing with its unique characteristics of achieving ultra-high-quality and ultra-high-precision micro-nano processing by reducing the heat-affected zone (HAZs). The unique Burstmode processing method in ultrafast laser processing can improve the ablation efficiency and ablation quality of material processing because it is a pulse train composed of multiple sub-pulses with lower pulse energy. [0003] However, due to the particularity of the pulsed laser in the process of being amplified, the energy of the first amplified sub-pulse in the envelope of the Burst pulse (burst pulse) will be higher than that of the later amplified sub-pulse. However, in some material...
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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257
Inventor 刘磊刘振林吴艳清周德胜
Owner 武汉华锐超快光纤激光技术有限公司