Dear all friends,

I am having a doubt in the following cases of coatings fabricate on 

1) multi layer stack coated on flat glass substrate and cemented each other with another flat substrate , measured at 45 degrees incidence.

2) multi layer stack coated on flat glass substrate and cemented with a right angle prism and measured

3) multilayer coating is coated on right angle prism and cemented it with another right angle prism and measured.

in all the above 3 cases how the reflectance and peak position will change ?

does the shape of the beam splitter will effect the reflectance?