finesse.components.space.Space.ABCD

Space.ABCD(from_node, to_node, direction='x', symbolic=False, copy=True, retboth=False)[source]

Returns the ABCD matrix of the space for the specified coupling.

../../../../_images/abcd_spacet.svg

This is given by,

\[M = \begin{pmatrix} 1 & \frac{L}{n_r} \\ 0 & 1 \end{pmatrix}, \]

where \(L\) is the length of the space and \(n_r\) is the index of refraction.

See Connector.ABCD() for descriptions of parameters, return values and possible exceptions.