A thin, free-standing, non-absorbing film of index is suspended in air ( ) on both…
PHYSICS · Multi-part · Fermi University Physics · Oscillations, Waves & Acoustics · Optics & Photonics · Wave propagation and light in media
What an Instrument Can See, Ch The boundary as a two-port
Problem
A thin, free-standing, non-absorbing film of index nf=1.38 is suspended in air (n=1) on both sides. Its thickness is a quarter of a wavelength measured in the film, d=λ0/(4nf), for the incident vacuum wavelength λ0. Light meets it at normal incidence.
((a)) Compose the two interface matrices and the propagation matrix for the layer to obtain the slab's amplitude reflection coefficient rslab in closed form.
((b)) Evaluate the slab's reflectance R.