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Scanning signal control method for pulse-pumping Q-switched laser cleaning

A scanning signal and control method technology, which is applied in the field of scanning signal control of Q-switched laser cleaning, can solve problems such as difficult to obtain continuous and uniform linear spots, and achieve the effects of improving thermal lens effect, reducing volume, and reducing waste heat

Active Publication Date: 2019-01-18
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

[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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  • Scanning signal control method for pulse-pumping Q-switched laser cleaning

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Embodiment Construction

[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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Abstract

The invention discloses a scanning signal control method for pulse-pumping Q-switched laser cleaning. The method includes the following steps that parameters of a laser are set, and a pulse-pumping Q-switched laser is started, and emits discontinuous pulse laser; parameters of a signal control panel are adjusted, sawtooth signal time is equal to pulse width pumping time, the duty ratio of sawtoothsignals is equal to the pulse-pumping duty ratio, triggering delay time of the sawtooth signals is adjusted, and the pumping time of the sawtooth signals and the pumping time of the pulse-pumping Q-switched laser are synchronous; through non-uniform periodical swinging of a galvanometer motor, and continuous and even linear laser spots are output. By means of the scanning signal control method, the problem that due to a continuous-emitting discontinuous pulse emission mode of the pulse-pumping Q-switched laser, distribution of scanned spots is interrupted and discontinuous is solved, and application of laser cleaning of the light source is achieved.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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
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