finesse.components.beamsplitter.Beamsplitter.abcd42y

property Beamsplitter.abcd42y

Numeric ABCD matrix from port 4 to port 2 in the sagittal plane.

Equivalent to beamsplitter.ABCD(4, 2, "y").

Getter:

Returns a copy of the (numeric) ABCD matrix for this coupling (read-only).