Laser Beam Spot Size Calculator

w(z) = w₀√(1 + (z/zᵣ)²)

Where w(z) is spot size at distance z, w₀ is waist radius, zᵣ is Rayleigh range

Calculation Method

Beam Waist Radius (μm)

Distance from Waist (mm)

Wavelength (nm)

Beam Spot Size: -

Spot Diameter: -

Rayleigh Range: -

Method Used: -

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