Solution to Ellipsometry Analysis Exercise

[physicist888]

hi all
im trying to solve this exercise of ellipsometry.
given:
the figure show the spectrum of ellipsometry of a twoo thin films Si3N4 and Si deposed on a substrat of INP.
in which order are deposed those thin films: 1- Si3N4/Si/InP
or 2- Si/Si3N4/InP
need justification.


here are the figures in the attachement ( figure 1, 2 and 3)

 

[physicist888]

none know about it??