Method for realizing stable output of laser device, and laser device system

A stable output and laser technology, applied in the field of lasers, can solve problems such as loss of focus, reduced processing accuracy, and deteriorated processing quality, and achieve the effects of improving reliability, improving output laser stability, and improving environmental adaptability

Active Publication Date: 2020-08-07
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For example, in the field of laser micromachining, the precision of micromachining can reach 1.5um, and the smallest etched microstructure size is tens of microns. Such high-precision material processing requires that the laser beam as a light knife remain almost unchanged during the working process. The transmission characteristics, its small jitter will cause the beam focused on the material to seriously deviate or lose focus, resulting in deterioration of processing quality and reduction of processing accuracy

Method used

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  • Method for realizing stable output of laser device, and laser device system
  • Method for realizing stable output of laser device, and laser device system
  • Method for realizing stable output of laser device, and laser device system

Examples

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Effect test

Embodiment 1

[0080] This embodiment provides a water-cooled solution to further describe the present invention in detail.

[0081] Step 1: Determine the heating components inside the main body of the laser; the heating components include LD pump modules, laser crystal modules, electro-optic or acousto-optic modulator modules, and various circuit control modules installed on the laser base plate;

[0082] Step 2: Install a water-cooled plate and corresponding flow valve and heat flow meter on each heating component, and unify the water temperature setting of the water cooler;

[0083] Step 3: Make each heating element work at the rated power, and obtain the heat dissipation power of the refrigeration component corresponding to each heating element;

[0084] Step 4: Change the flow setting value of each flow valve separately, and measure the relationship curve between the cooling water flow value of each heating element and the heat dissipation power and surface temperature of the water cool...

Embodiment 2

[0100] This embodiment provides a solution in which the refrigeration component is electric refrigeration to further describe the present invention in detail,

[0101] Step 1: Determine the heating components inside the main body of the laser; the heating components include LD pump modules, laser crystal modules, electro-optic or acousto-optic modulator modules, and various circuit control modules installed on the laser base plate.

[0102] Step 2: Install a semiconductor cooling chip on each heating component, and set a thermostat to control the semiconductor cooling chip;

[0103] Step 3: Make each heating element work under the rated power, and obtain the heat dissipation power of the semiconductor refrigeration sheet corresponding to each heating element;

[0104] Step 4: Change the cooling capacity of each semiconductor cooling chip separately, and measure the relationship curve between the cooling capacity of each heating element and the heat dissipation power and surfac...

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Abstract

The invention discloses a method for realizing stable output of a laser device, and a laser device system. According to the invention, the heat regenerating condition of each heat regenerating component in a laser device is calculated through measurement and analysis, the refrigerating capacity required to be kept in the optimal working state of the laser device is simulated, and the temperature of each heat regenerating component in the laser device is detected in real time while the refrigerating capacity of each heat regenerating component in the laser device in a cooling scheme is corrected in time according to the comparison of the detected real-time temperature and the temperature in an optimal cooling scheme, so that the purpose of finally realizing the optical-mechanical heat balance of the laser device starting from the global domain is achieved. With the method and the system, the laser device has the product performances of strong environment self-adaptive capability, good output light beam quality and excellent long-time working stability.

Description

technical field [0001] The invention belongs to the technical field of lasers, and in particular relates to a method for realizing stable output of a laser and a laser system. Background technique [0002] Among all the parameters of the laser, the output power and stability of the laser are the most basic technical indicators of the output characteristics of the laser, and are also particularly important index parameters, and directly affect the quality and efficiency of processing. [0003] The main factors affecting the output power and stability of the laser include operating current, operating voltage, operating temperature and many other factors. Among them, the operating temperature not only affects the stability of the output power of the laser, but also affects the key parameters such as the pointing stability and beam quality of the laser. , and the application requirements of these parameters in fields such as laser processing are extremely strict, such as the poi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/13H01S3/131H01S3/04
CPCH01S3/0405H01S3/0407H01S3/13H01S3/1317
Inventor 杨直赵卫杨小君王屹山李强龙
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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