پارامونهای ِ استوکس
Fr.: paramètres de Stokes
Four parameters which are needed to fully describe the
→ polarization state of
→ electromagnetic radiation.
They involve the maximum and minimum intensity, the ellipticity,
and the direction of polarization.
The four Stokes parameters are traditionally defined as follows:
I ≡ total intensity.
Q ≡ I0 - I90 =
difference in intensities between → horizontal
and → vertical
→ linearly polarized components.
U ≡ I+45 - I-45 =
difference in intensities between linearly polarized components
oriented at +45° and -45° (or 135°).
V ≡ Ircp - Ilcp =
difference in intensities between right and left
→ circularly polarized
→ Stokes; → parameter.