Drag to rotate · scroll to zoom · grid ticks show real distance (mm); beam width is exaggerated for visibility
Dₒ = Dⁱ + 2 · [ L · tan(θⁱ / 2) ]
Circular or elliptical 1/e² spot-size approximation based on input beam diameter and divergence. For lasers, beam diameter is given for TEM₀₀ mode. Use American number formatting (e.g. "2.5", not "2,5").
Determine spot size of our lasers and laser diode modules from user supplied working distances. Calculator provides circular or elliptical spot size approximations based on 1/e2 beam diameter and beam divergence; for lasers, beam diameter is given for TEM00 mode. Spot size visibility varies based on ambient light conditions.
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