Laser Beam Spot Size Calculator

M²-extended paraxial beam propagation model.

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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.

1/e² beam radiuswaist*sqrt(1+(distance*m2*wavelength/(pi*waist^2))^2)

Effective Rayleigh rangepi*waist^2/(m2*wavelength)