yeh_tm.optimize_thicknesses

yeh_tm.optimize_thicknesses(S, w, Q, dQ=0.01, Qid=4, dmin=0.001, keep_first_fixed=True, MAXit=10)

Optimize the thicknesses of each layer to minimize the merit function. The algorithm uses a parabolic approximation of the merit function and optimizes one layer thickness at a time.

Parameters:

• S (System) – Optical system containing the layer stack.
• w (array) – List of frequencies where a target is specified.
• Q (array) – List of target values at the given frequencies (same shape as w).
• dQ (float) – Allowed design tolerance of the target (in absolute units).
• Qid (int) – Identifier of the quantity that should be used for calculation of the merit function. (0 = Rxx, ..., 7 = Tyy).
• dmin (float) – Minimum layer thickness and thickness increment (default = 1nm).
• keep_first_fixed (bool) – Set to True if first layer should not be modified.
• MAXit (int) – Maximum number of iterations (default = 10).

Returns:

Value of merit function.