Silicon nitride has an index of refraction of in the visible range

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics

Problem

Silicon nitride has an index of refraction of nsub=2.0n_{\text{sub}}=2.0 in the visible range. For a single-layer antireflection coating operating at normal incidence in air, determine the refractive index nfilmn_{\text{film}} that will ideally eliminate reflection at a chosen design wavelength.

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