ARC Reflectance

$r_{1} = \frac{n_{0} - n_{1}}{n_{0} + n_{1}}$

$r_{2} = \frac{n_{1} - n_{2}}{n_{1} + n_{2}}$

$θ = \frac{2 π n_{1} t_{1}}{λ}$

For the reflectance at normal incidence we define a series of parameters r1, r2, and θ

The surrounding region has a refractive index of n0

the ARC has a refractive index of n1

a thickness of t1

the silicon has a refractive index of n2

Related Equations

ARC Substrate Reflectivity

$R = | r^{2} | = \frac{r_{1}^{2} + r_{2}^{2} + 2 r_{1} r_{2} \cos 2 θ}{1 + r_{1}^{2} r_{2}^{2} + 2 r_{1} r_{2} \cos 2 θ}$

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