LightInteraction

class LightInteraction(name, side, sign, readout=False, angle=0.0, parent=None, children=None)

Bases: NodeMixin

Represents (dipole) interaction between the system and a light beam.

Parameters:

• name (str) – Identifier for the light beam.

• side (rotsim2d.pathways.Side) – Ket or bra excitation.

• sign (rotsim2d.pathways.KSign) – Wavevector sign of created polarization contribution.

• readout (bool) – Readout or actual light interaction.

• angle (float | Tuple[float, float]) – Single float for linear polarization and pair of numbers for elliptical.

Attributes

fullname
tier	Number of interactions preceding this one in the tree.
name	Identifier for the light beam.
side	Ket or bra excitation.
sign	Wavevector sign of created polarization contribution.
angle	Single float for linear polarization and pair of numbers for elliptical.
readout	Readout or actual light interaction.

Methods

__init__(name, side, sign[, readout, angle, ...])
conj()	Return detached conjugate of this LightInteraction.
evolve(**kwargs)	Return copy with some attributes replaced.
is_absorption()	True if absorption within dipole approximation.