Problem 12.2 Light of wavelength A in a medium of refractive index n, is normally incident on a thin film of refractive index n₂ and optical thickness A/4 which coats a plane substrate of refractive index n3. Show that the film is a perfect anti-reflector (r= 0) if n² = n3.
Problem 12.2 Light of wavelength A in a medium of refractive index n, is normally incident on a thin film of refractive index n₂ and optical thickness A/4 which coats a plane substrate of refractive index n3. Show that the film is a perfect anti-reflector (r= 0) if n² = n3.
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Transcribed Image Text:Problem 12.2
Light of wavelength A in a medium of refractive index n₁ is normally incident on a thin film of
refractive index n₂ and optical thickness X/4 which coats a plane substrate of refractive index n3.
Show that the film is a perfect anti-reflector (r = 0) if n² = n₁n3.
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