nz n₁ A laser beam is incident at angle 0 on a rectangular slab of material with index of refraction n₁. On top of the material there is a second material with index of refraction n₂ (with n₂ < n₁). Calculate the maximum angle 0 for which full internal reflection occurs at the interface between the two materials. Take n = 1 outside the material. Hint: sin (- = cos = √1 - sin² þ.

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nz
n₁
A laser beam is incident at angle 0 on a rectangular slab of material with index of refraction
n₁. On top of the material there is a second material with index of refraction n₂ (with n₂ <
n₁).
Calculate the maximum angle 0 for which full internal reflection occurs at the interface
between the two materials. Take n = 1 outside the material.
Hint: sin (- = cos = √1 - sin² þ.
Transcribed Image Text:nz n₁ A laser beam is incident at angle 0 on a rectangular slab of material with index of refraction n₁. On top of the material there is a second material with index of refraction n₂ (with n₂ < n₁). Calculate the maximum angle 0 for which full internal reflection occurs at the interface between the two materials. Take n = 1 outside the material. Hint: sin (- = cos = √1 - sin² þ.
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