Fiber laser and laser marking machine

A fiber laser, laser technology, applied in the field of laser marking, can solve problems such as laser leakage marking

Inactive Publication Date: 2016-08-10
MAXPHOTONICS CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned defects, the object of the present invention is to provide a fiber laser and its laser marking machine, which can solve the problem of missing marking of the laser at high and low temperatures, and can improve the stability and reliability of the machine at the same time

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  • Fiber laser and laser marking machine
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Embodiment Construction

[0027] 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 the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] Through the experiment of simultaneously monitoring the forward light during the marking process of high-reflective materials such as stainless steel (that is, high-reflective materials), monitor and compare the machines with high and low temperature miss-marks and non-miss-marks, it can be found that most of the machines with miss-marks will There is a strong peak output pulse, and the missed area is proportional to the probability of the peak pulse.

[0029] There are two situations for the formation of high and low temperature spikes:

[0030] 1. Due to the low return light loss of the m...

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PUM

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Abstract

The invention relates to the technical field of laser marking, and discloses a fiber laser, which at least includes a resonant cavity or a seed source connected in sequence, a primary optical path and a secondary optical path; the output isolator in the secondary optical path The return optical loss is greater than or equal to a predetermined return loss threshold; and/or the gain of the primary optical path is greater than or equal to a predetermined first gain threshold, and the gain of the secondary optical path is less than or equal to a predetermined second gain threshold . The present invention also provides a laser marking machine including the above laser. Thereby, the present invention can solve the problem of missing marking of the laser at high and low temperature, and can improve the stability and reliability of the machine at the same time.

Description

technical field [0001] The invention relates to the technical field of laser marking, in particular to a fiber laser and a laser marking machine thereof. Background technique [0002] Laser marking is one of the largest application areas in the laser processing industry. Laser marking is a marking method that uses a high-energy-density laser to locally irradiate the workpiece to vaporize the surface material or undergo a chemical reaction of color change, thereby leaving a permanent mark. Laser marking can print various characters, symbols and patterns, etc., and the character size can range from millimeters to microns, which has special significance for product anti-counterfeiting. [0003] According to different use environments, it is generally required that it can work normally at -10°C to 50°C. However, under the working environment below -10°C and above 50°C, the laser is prone to missed marking, which not only affects the marking process but also easily causes abnor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/10B41J2/435
CPCH01S3/067B41J2/435H01S3/10084
Inventor 李伟闻小波庄众居剑蒋峰
Owner MAXPHOTONICS CORP
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