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What your laser settings actually do

Pick a machine, a material and the result you want. You get the speed, power and pulse numbers that reach it, or a straight answer that your laser cannot.

Not sure which result to aim for yet? Start with the verdict chips in Pick your mark to see which marks your laser can make at all, then come back here for the numbers.

30 W MOPA fiber · 1064 nm · time axis: pulse width

What do you want to do?

What happens here

No mark

Surface never reaches a process temperature. Adding passes at this irradiance changes nothing except cycle time.

Pulse width
500 ns
Frequency
500 kHz
Speed
7000 mm/s
Power
74.51%
Dose
0.0532 J/mm²
  • Pulse width snapped to 500 ns. Your source only fires menu values.
  • Speed held at 7000 mm/s, so pulses overlap more than planned.

Colour key

Band edges are soft. Dots are cards you ran, so believe the dot.

Drag anywhere on the map

Dimmed areas are out of reach for 30 W MOPA fiber.

Pulse width snapped to 500 ns. Your source only fires menu values.
1 ns10 ns100 ns1 µs10 µs100 µs1 ms10 ms100 msHow long the beam sits on one spot. Longer means heat spreads1 kW/cm²10 kW/cm²100 kW/cm²1 MW/cm²10 MW/cm²100 MW/cm²1 GW/cm²10 GW/cm²How hard it hits. Harder means removal, not heating100 W CO₂ cruising at 300 mm/sMOPA colour-marking pass10 W diode engraving wood at 100 mm/s

No mark

Surface never reaches a process temperature. Adding passes at this irradiance changes nothing except cycle time.

Literature

Why it comes down to two numbers

Speed, power, frequency and pulse width are four knobs for two things: how long the beam sits on one spot, and how hard it hits while it is there. That is why different-looking settings can leave the identical mark.

Spread the same energy over more time and you get heat and discolour. Deliver it in a few billionths of a second and you get material removal.

Why lasers work on some materials but not others

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