B-Integral calculator

Accumulated nonlinear phase shift in transparent media.

Category: Nonlinear Optics

Formula: B = (2π/λ)·n₂·I·L

Inputs

InputParameterUnitDefault
λlamnm800
n₂n210⁻¹⁶cm²/W3
IntensityIGW/cm²10
LengthLmm5

Result with the default inputs

  • B: 0.1178 rad
  • Risk SPM (B>3): ✓ low

Open it with your own values: put each input in the address as a parameter, for example /calculators/b-integral?lam=800. A unit other than the listed one goes in <parameter>_unit.

Read more: Wikipedia: Self-phase modulation

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