finesse.components.surface.Surface.set_RTL

Surface.set_RTL(R=None, T=None, L=None)[source]

Set the values for the R, T and L properties of the surface.

One of the following combination must be specified:

  • R and T or,

  • R and L or,

  • T and L or,

  • R and T and L

In the first three cases, the remaining parameter is set via the condition,

\[R + T + L = 1 \]
Parameters:
Rscalar

Value of the reflectivity to set.

Tscalar

Value of the transmissivity to set.

Lscalar

Value of the loss to set.

Raises:
ValueError

If a combination other than one of the above is specified.

Or if R, T and L are all given but they sum to anything other than one.