Consider the total internal reflection of a laser beam of wavelength 532 nm in air, incident on a right-angle prism, as shown in the figure. The incident and reflected beams are orthogonal and the prism's refractive index is 1.5. At what distance from the interface does the electric field amplitude of the evanescent wave fall to 1/e of its value at the interface?
Io IR
Consider the total internal reflection of a laser beam of wavelength 532 nm in air, incident on a right-angle prism, as
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