Two-Photon Action Cross-Section calculator

Effective excitation rate from σ2·η at given peak intensity.

Category: Imaging

Formula: Rate ∝ σ2·η · I²

Inputs

InputParameterUnitDefault
σ2 (GM)sig50
Quantum yield ηeta0.8
Peak I (GW/cm²)I100

Result with the default inputs

  • Action σ2·η: 40 GM
  • Rel. brightness: 400000

Open it with your own values: put each input in the address as a parameter, for example /calculators/two-photon-action-cross-section?sig=50. A unit other than the listed one goes in <parameter>_unit.

Read more: Wikipedia: Two-photon absorption

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