Stokes parameters

Of elliptically polarized incident radiation, these are given by

$s 0 0 = E 1 0 + E 2 0$

$s 1 0 = E 1 0 − E 2 0$

$s 2 0 = 2 E 1 0 E 2 0 cos ⁡ δ 0$

$s 3 0 = 2 E 1 0 E 2 0 sin ⁡ δ 0$

where $E 1 0$ and $E 2 0$ specify the irradiances of the incident light polarized with their electric vectors vibrating perpendicular and parallel to the scattering, respectively and $δ 0$ is the phase difference between these electric vectors.