Laser Focusing & Spot Size Simulator
Visualize Gaussian beam focusing in real time. Adjust Focal Length, Input Beam Diameter, and M² Beam Quality to calculate focused spot size, depth of focus, and peak intensity instantly.
Laser Focusing & Spot Size Simulator
w₀ = M²λf / πwin
I₀ = 2P / πw₀²
Full Screen
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HOVER TO MEASURE INTENSITY · CLICK TO PIN MEASUREMENT
Beam Input
Input Beam Dia. D
5.0 mm
M² Beam Quality
1.0
Focusing Lens
Focal Length f
50 mm
f-number (f/#)
f/10
Transmission
96%
Power & Target
Input Power P
1.0 W
View Range
±3 × DOF
Target Material
Live Readouts
Spot dia. 2w₀
—
Rayleigh z_R
—
Depth of Focus
—
BPP
—
Peak Intensity
—
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