Scanning signal control method for pulse-pumped Q-switched laser cleaning
A scanning signal and control method technology, applied in the scanning signal control field of Q-switched laser cleaning, can solve the problem of difficulty in obtaining a continuous and uniform linear light spot, and achieve the effects of improving the thermal lens effect, reducing waste heat and reducing heat generation.
Active Publication Date: 2021-02-05
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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[0006] However, since the laser light emitted by the pulse-pumped Q-switched laser is continuous and discontinuous, it is difficult to obtain a continuous and uniform linear spot by using traditional control methods
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[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0030] The invention discloses a scan signal control method for pulse-pumped Q-switched laser cleaning. The method includes the following steps: setting the parameters of the laser, starting the pulse-pumped Q-switched laser to make it emit non-continuous pulsed laser ;Adjust the parameters of the signal control board so that the sawtooth signal time is equal to the pumping pulse width time, the sawtooth signal duty cycle is equal to the pulse pumping duty cycle, and adjust the trigger delay time of the sawtooth signal so that the sawtooth signal and pulse pumping The pumping time of the Q-switched laser is synchronized; through the non-uniform periodic oscillation of the galvanometer motor, a continuous and uniform linear...
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A scan signal control method for pulse-pumped Q-switched laser cleaning, said method comprising the following steps: setting the parameters of the laser, turning on the pulse-pumped Q-switched laser so that it emits discontinuous pulse lasers; adjusting signal control Board parameters, so that the sawtooth signal time is equal to the pumping pulse width time, the sawtooth signal duty cycle is equal to the pulse pumping duty cycle, adjust the trigger delay time of the sawtooth signal, so that the sawtooth signal and pulse pump the Q-switched laser The pumping time is synchronized; through the non-uniform periodic oscillation of the galvanometer motor, a continuous and uniform linear laser spot is output. The scanning signal control method of the present invention can solve the problem of intermittent and discontinuous scanning spot distribution caused by the pulse-pumped Q-switched laser due to its burst-type discontinuous pulse emission mode, and realize the application of laser cleaning of this type of light source.
Description
technical field [0001] The invention belongs to the technical field of laser cleaning technology, and in particular relates to a scanning signal control method for pulse-pumped Q-switched laser cleaning. Background technique [0002] Laser cleaning is an efficient and green cleaning technology. Compared with chemical cleaning, it does not require any chemicals and cleaning fluids; compared with mechanical cleaning, it has no grinding, no stress, no consumables, and minimal damage to the substrate (cultural relics, calligraphy and paintings) Cleaning); the laser can be guided by optical fiber transmission to clean hard-to-reach parts, and has a wide range of applications (nuclear pipeline cleaning). Applicable objects are also relatively wide, such as rust removal, paint removal, mud removal, wafer surface treatment; high cleanliness (can remove pollution particles below the nanometer level), this technology has been applied in various fields internationally (mold cleaning, f...
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IPC IPC(8): B08B7/00B08B13/00
CPCB08B7/0042B08B13/00
Inventor 王奕博林学春张志研梁浩刘燕楠赵树森
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI