M² ↔ Divergence calculator
Beam parameter product, M² and far-field divergence relations.
Category: Unit Converters
Formula: θ = M² · λ/(π·w0) · BPP = w0·θ
Inputs
| Input | Parameter | Unit | Default |
|---|---|---|---|
| Wavelength | lam | nm | 1064 |
| Waist w0 | w0 | µm | 100 |
| M² | M2 | 1.1 |
Result with the default inputs
- Half-angle div.: 3.7255 mrad
- Full-angle div.: 7.451 mrad
- BPP: 0.3725 mm·mrad
Open it with your own values: put each input in the address as a parameter, for example /calculators/m2-divergence?lam=1064. A unit other than the listed one goes in <parameter>_unit.
Read more: Wikipedia: Beam quality