
Novice problem in mathematica syntax : Function of a function:
Posted:
Nov 21, 2012 7:51 PM


hi,
What I want to do is to : Plot Reflectivity:
Refelectivity is an expression ( or a function ) depending on nfilm which in turn depends on epsmodel( which in itself is a function of 3 parameters and a variable )
therefore : epsmodel = f(a,b,c,d,x) (* result is a comlpex number *) nfilm = sqrt[epsmodel] reflectivity = ((nfilm  1) / (nfilm +1))^2
I just want to plot reflectivity and see the variation in it when (a,b,c,x) varies ( using the Manipulate[] tool )
Please let me know how to do this in term of these functions ?
the exact formalism for which I got the error : variables are protected is shown below
epsmodel[w_, omega0_, gama_, epsinfi_, omegaP_] := epsinfi + (2 Pi*10^12 omegaP)^2/((2 Pi*10^12 omega0)^2  (2 \ Pi*10^12*w)^2 + I*(2 Pi*10^12)^2 *gama*w);
nfilm[w1_, omega01_, gama1_, epsinfi1_, omegaP1_] := Sqrt[epsmodel[w1, omega01, gama1, omegaP1, epsinfi1]];
ReflectivityGaSb[w2_, omega02_, gama2_, epsinfi2_, omegaP2_] := Abs[((nfilm[w2, omega02, gama2, omegaP2, epsinfi2]  1)/( nfilm[w2, omega02, gama2, omegaP2, epsinfi2] + 1))^2];
Manipulate[ Plot[ReflectivityGaSb[w20, omega020, gama20, omegaP20, epsinfi20], {w20, 0, 300}, PlotRange > {0, 1}], {epsinfi20, 2, 25}, {omega020, 0, 300}, {gama20, 0, 300}, {omegaP20, 0, 300}]
Thanking you Prasad P Iyer PS. feel free to reply to ppiyer@outlook.com

