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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![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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffb9c370b-7394-44c4-bab0-b9312c4d5c01%2Fb6255b12-b266-492d-84f5-6e030c0bc533%2Fskgomzd_processed.jpeg&w=3840&q=75)
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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