Hi Philippe,
Maybe you have to think about what unpolarized light actually is.
I think it is equal amounts of both orthagonal polarisations. So I think you can insert both polarisations with equal amplitude, and the results is what you get for unpolarised light.
Maybe you have to think about what unpolarized light actually is.
I think it is equal amounts of both orthagonal polarisations. So I think you can insert both polarisations with equal amplitude, and the results is what you get for unpolarised light.