Stimulated Emission - Stimulated Emission Cross Section

Stimulated Emission Cross Section

The stimulated emission cross section (in square meters) is

where

A21 is the Einstein A coefficient (in radians per second),
λ is the wavelength (in meters),
n is the refractive index of the medium (dimensionless), and
g(ν) is the spectral line shape function (in seconds).

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