4 ms·
AR coatings are not perfect at the interface boundary (kind of the same problem as a perfect mirror in reverse), plus glass has attenuation.
by chris_va 7y ago
AR coatings are not perfect at the interface boundary (kind of the same problem as a perfect mirror in reverse), plus glass has attenuation.
- mannykannot 7y agoI get the point about glass attenuation, but with regard to AR (anti-reflection?) coatings, are you referring to the surface through which light enters the prisms? If those surfaces are normal to the laser beam, would the reflected light not still be contained within the beam path, just as it is in the case of a Fabry-Perot resonator?
- chris_va 7y agoYes, but at the wrong path length (and offset by some vector, if you had a TIR cube)