Polarization

#Physics

Topics

• Light Polarization

$\displaystyle \vec{P}=\frac{\vec{p}}{V}$

• $\displaystyle \vec{p}$ is the electric dipole moment

$\displaystyle \vec{P}=\alpha \vec{E}$

• The dipole moment $\displaystyle \vec{p}$ induced by an external electric field $\displaystyle \vec{E}$ for an atom with atomic polarizability $\displaystyle \alpha$
• $\displaystyle \alpha$ may be a tensor $\displaystyle \alpha_{ij}$

$\displaystyle \vec{P}={\varepsilon}{0}\chi{e}\vec{E}$

• $\displaystyle \chi_{e}$ is Electric Susceptibility