Take the tour ×  Is there formula that gives reflectance of very
thin film of given metal (tens of nanometers) to the visible
light of given wavelength(808nm) ? Which properties of metals
are needed for the formula ?  I would like to draw a plot of
reflectance that is a function of titanium film thickness.
Thanks  share|improve this question Related:
physics.stackexchange.com/q/31830/2451 –  Qmechanic Aug 1 '12 at
19:16 add comment  2 Answers  You need to know the index of
refrection of the metal AND the substrate. (You didn't mention
the substrate, but I assume your 10nm-thick film is not floating
in space!!)  This is a three-layer structure: Air, thin film,
substrate. You need to know wavelength, the incident angle, the
refractive index of all three layers, and the thickness of the
film. With those parameters in hand, you can do the calculation.
The calculation is conventionally set up using the transfer
matrix method. You can find many programs online. (This page
alone has 2 programs, plus links to 9 othe