Laser Beam Divergence Calculator

Paraxial Gaussian/M² approximation with radius and half-angle conventions.

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Result

Enter your values and run the tool to see your result.

Check the units, enter your values, and run the tool. Results follow the assumptions and method below.

Far-field half-angle divergencem2*wavelength/(pi*waist)

Far-field full-angle divergence2*m2*wavelength/(pi*waist)