Sellmeier coefficients and related calculations

n2=A + B/(λ2-C) + Dλ2:given A,B,C,D, lambdas, generate values of n
λ start: nm λ end: nm A: B: C: D: fileName1:

3 term cauchy: n(λ)=B+C/(λ2)+D/(λ4):given 3 (n,λ) pairs, generate B,C,D
λ1: nm λ2: nm λ3: nm n1: n2: n3: