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How to Set Fiber Laser Settings for Fiber Laser Cutter

After investing significantly in fiber laser cutting equipment, customers face substantial losses if the fiber laser settings are not set correctly.

In this guide, we will provide essential insights into the correct fiber laser parameters that not only prevent financial setbacks but also significantly enhance the accuracy, precision, and overall work efficiency of laser cutting. Let’s dive into the key parameters to ensure optimal performance and maximize the return on your investment.

fiber laser cutting machine metal
fiber laser cutting machine metal

What is fiber Laser?

Fiber laser is a fiber-based solid laser with the characteristics of high efficiency, stability and reliability. With its advantages, laser everything parameters includes pump light source, fiber amplifier, fiber mirror, and laser output fiber.

Pump light source

The pump light source is the core component of the fiber laser, which provides energy to the excitation fiber and the dopants in the material to generate laser light. Commonly used pump light sources include semiconductor pump diodes, fiber-coupled laser diodes, etc. Semiconductor pump diodes are the most commonly used pump light sources.

Fiber amplifier

Fiber amplifier is another key component of fiber laser and is used to amplify the laser light generated by the pump light source. The structure of the fiber amplifier includes doped fiber, pump light source and fiber reflector.

Fiber optic reflector

Fiber optic mirrors are mirrors that reflect laser light back to doped optical fibers. Their structures include lenses and reflective films.

Laser output fiber

The laser output fiber is an optical fiber that transmits the generated laser light to the desired location. Its structure is similar to that of ordinary optical fiber. The quality of the laser output fiber has a great impact on the output power and stability of the laser, so it is important to choose high-quality fiber.

fiber laser cutting machine metal
fiber laser cutting machine metal

What are Laser cutting parameters?

  1. Laser wavelength: The wavelength of light emitted by the laser, usually in nanometers (nm). Lasers of different wavelengths are suitable for different applications.
  2. Laser power: refers to the power output by the laser, usually in watts (W). The greater the power of the laser, the stronger its energy and irradiation capability.
  3. Laser pulse width: refers to the time width of the laser output pulse, usually in picoseconds (ps). The shorter the pulse width, the higher the energy density and irradiation accuracy.
  4. Mode: The mode of the laser can be single mode or multi-mode. The beam output by a single-mode laser is more collimated and suitable for applications requiring high precision, while the beam output by a multi-mode laser is looser and suitable for applications requiring large-area irradiation.
  5. Fiber laser frequency: refers to the repetition frequency of the laser output pulse, usually in kilohertz (kHz). The higher the repetition frequency, the faster the processing speed.
  6. Laser beam quality: refers to the quality of the laser output beam, usually measured by the M2 value. The higher the beam quality, the better the beam can be focused.
  7. Laser stability: refers to the stability of the laser output power, usually expressed in percentage (%). The higher the stability of the laser, the smaller the fluctuation range of its output power.
  8. Laser life: refers to the service life of the laser, usually in hours (h). Longer laser life results in less frequent equipment maintenance and replacement.

Fiber laser settings that affect cutting quality:

Cutting height, cutting nozzle model, focus position, cutting power, cutting frequency, cutting duty cycle, cutting air pressure and cutting speed.

Hardware conditions include: protective lens, gas purity, plate quality, focusing lens and collimating lens.

metal laser cutting machines
metal laser cutting machines

Fiber laser cutter settings for different materials

When adjusting parameter data when cutting stainless steel, modify the laser cutting machine settings in a targeted manner according to the problems that often occur when cutting stainless steel plates.

The slit width is generally around 0.5mm, which is related to factors such as the nature and thickness of the material to be cut, laser power, focal length and focus position, laser beam diameter, injection gas pressure and flow rate, etc.

FactorLaser PowerGas PressureMaterial ThicknessCutting Speed (for example)
Increase/DecreaseIncreaseIncreaseDecreaseVaries based on material
Example Scenario3000WHigh pressure6mm Stainless Steel3m/min
Example Scenario3000WHigh pressure8mm Stainless Steel1.2m/min
Example Scenario3000WHigh pressure6mm Aluminum2m/min

1000w-15kw Fiber laser cutting parameters

Laser Power (W)MaterialThickness Range (mm)
1000w Carbon Steel0.8-10
1000w Stainless Steel0.8-5
1000w Aluminum Alloy0.8-3
1000w Brass1-3
1500wCarbon Steel1-16
1500wStainless Steel1-6
1500wAluminum Alloy1-4
2000wCarbon Steel1-20
2000Stainless Steel1-8
2000wAluminum Alloy1-6
3000w-3300wCarbon Steel1-22
3000w-3300wStainless Steel1-10
3kw-3300wAluminum Alloy1-8
4kwCarbon Steel1-25
4000wStainless Steel1-15
4kwAluminum Alloy1-10
6000wCarbon Steel1-30
6000wStainless Steel1-20
6kwAluminum Alloy1-20
8000wCarbon Steel1-40
8000wStainless Steel1-30
8000wAluminum Alloy1-30
10000wCarbon Steel1-45
10000wStainless Steel1-40
10000wAluminum Alloy1-40
12000wCarbon Steel1-50
12000wStainless Steel1-45
12kwAluminum Alloy1-45
15000Carbon Steel1-60
15000Stainless Steel1-50
15kwAluminum Alloy1-40
Fiber laser cutting parameters lists

Cutting effect is not good, how to check the laser settings

  1. Cutting height (it is recommended that the actual cutting height is between 0.8~1.2mm). If the actual cutting height is inaccurate, calibration is required.
  2. Cutting nozzle. Check whether the model and size of the cutting nozzle are used correctly. If it is correct, check whether the cutting nozzle is damaged and whether the roundness is normal.
  3. Optical center It is recommended to use a cutting nozzle with a diameter of 1.0 to check the optical center. The light spots produced in this way are small and easy to observe.
  4. Protect the lens. Check whether the protective lens is clean and requires no water, no oil, and no residue. Sometimes the protective lenses may fog up due to weather conditions or too cold air.
  5. Focus Check whether the focus is set correctly. If it is an automatic focusing cutting head, you must use the APP to check whether the focus is correct.
  6. Modify laser parameters
laser cutting machine metal
laser cutting machine metal

Difference between different wavelengths in laser parameters:

The wavelength of red laser is generally between 630nm and 680nm, and the light emitted is red. It is also the most common laser (mainly used in the field of medical mammography, etc.);

The wavelength of green laser is generally around 532nm (mainly used in the field of laser ranging, etc.);

The wavelength of blue laser is generally between 400nm-500nm (mainly used in laser surgery and engraving fields, etc.);

Ultraviolet laser is between 350nm-400nm (mainly used in biomedicine and material processing fields);

How fiber laser deep engraving settings

Before using a laser engraving machine, you must first understand its basic operation. Generally speaking, the operation panel of a laser engraving machine includes a power button, start/stop button, mode selection button, depth adjustment knob, etc. Users need to be familiar with the functions and operation methods of these buttons so that the engraving process can proceed smoothly.

Choose the appropriate engraving mode

The engraving modes of laser engraving machines include outline engraving, fill engraving, text engraving, etc. Users need to choose the appropriate engraving mode according to actual needs in order to obtain better engraving effects.

metal lasr cutter
metal lasr cutter

Adjust depth adjustment knob

The depth adjustment knob is one of the most important control parts of the laser engraving machine. Users need to adjust the depth according to the actual situation in order to obtain the ideal engraving effect.

When adjusting the depth, pay attention to the following points:

  1. Adjust the depth range: Different laser engraving machines have different depth ranges, and users need to adjust them according to the actual situation.
  2. Adjust depth accuracy: The accuracy of the depth adjustment knob is an important factor affecting the engraving effect. Users need to adjust it according to the actual situation.
  3. Avoid over-engraving: Over-engraving will cause the material to become thin or damaged, affecting the engraving effect and quality. Users need to pay attention to controlling the depth and avoid over-carving.

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