Laser calculator

Pick your laser, enter your LightBurn settings, read off the physics.

Laser & material

Laser source

Diode445 nm·2.5 Wspecs

Target material (optional — enables thermal model)

LightBurn settings

The operating parameters you dial into your job.

Power60 %

Speedmm/smax 166 mm/sLine intervalmm10 lines/mm

PWM duty1

modulation duty cycle

Passes

Source parameters

Adjust to match your exact hardware. Defaults from the selected laser.

Derived metrics

continuous-wave

Spot Ø

80 µm

measured

Spot area

5.03e-5 cm²

Avg power

1.5 W

Areal dose

10 J/cm²

energy per unit area

Delivered power

1.5 W

Line energy

0.01 J/mm

Dwell time

0.53 ms

Peak irradiance

5.97e+4 W/cm²

Gaussian centre

Line overlap

gap

Avg irradiance

2.98e+4 W/cm²

Energy deposition heatmap

Accumulated dose over a 0.8 mm square of surface. Continuous scan tracks.

continuous coverage

200 µm

0local dose (J/cm²)20

Select a target material to model peak surface temperature and the marking regime.

Sensitivity sweep

How areal dose responds as one setting varies — everything else held at your current values.

Vary (x-axis)Show (y-axis)

Dashed line marks your current speed = 150 mm/s.