Some articles on film, waveguide:
... A prism coupler is used to couple the power from an incident laser beam into a thin film ... The film lies on a substrate such as a glass microscope slide and might have a thickness of the order of the wavelength of the incident light (0.550 μm for green light) ... The refractive index of the film is made greater than that of the glass slide, the film can serve as a dielectric planar waveguide for light via total internal ...
Famous quotes containing the word film:
“Film is more than the twentieth-century art. Its another part of the twentieth-century mind. Its the world seen from inside. Weve come to a certain point in the history of film. If a thing can be filmed, the film is implied in the thing itself. This is where we are. The twentieth century is on film.... You have to ask yourself if theres anything about us more important than the fact that were constantly on film, constantly watching ourselves.”
—Don Delillo (b. 1926)