Table S2.
Symbol | For a propagating wave | For an evanescent field | Quantity |
Poynting momentum density | |||
0 | Value of the imaginary adjoint to the Poynting momentum density | ||
Orbital (or canonical) Poynting momentum density | |||
Electric contribution to the orbital Poynting momentum density | |||
Magnetic contribution to the orbital Poynting momentum density | |||
0 | Spin part of the Poynting momentum density [Belinfante’s momentum (17, 19)] | ||
0 | Electric contribution to the spin momentum density | ||
0 | Magnetic contribution to the spin momentum density | ||
SAM density | |||
Electric contribution to the SAM density | |||
Magnetic contribution to the SAM | |||
h | Helicity | ||
0 | Vorticity of the photon flow | ||
Electric contribution to energy density | |||
Magnetic contribution to energy density |
Summary of the physical quantities involved in the force for a propagating plane wave and for an evanescent field. The magnetic and electric contributions to the orbital and spin angular momenta are listed explicitly.