1;


load '/tmp/xi_vs_power.mat' ;

Er=(1+I*xi_right)*E_field_pos_freq.right;
El=(1+I*xi_left) *E_field_pos_freq.left;

Ex=(Er+El)/sqrt(2);
Ey=I*(Er-El)/sqrt(2);

%extra rotation to compensate rotation due to ellipticity
% actually no need for it since x-polarization shifts by positive phase 
% and y-pol by negative phase 
%el_rot=0*psi_el;
%Ex=cos(el_rot)*Ex-sin(el_rot)*Ey;
%Ey=sin(el_rot)*Ex+cos(el_rot)*Ey;

Ipos=(abs(Ey).^2)/2;
Ineg=(abs(Ex).^2)/2;

figure(1);
hold off;
plot(Ep.^2, real(xi_left-xi_right), '-');  
title("differential real xi");
xlabel("two photon detuning");

figure(2);
hold off;
plot(Ep.^2, imag(xi_left-xi_right), '-');  
title("differential imag xi");
xlabel("two photon detuning");

figure(3);
hold off;
plot(Ep.^2, imag(xi_left), '-', Ep, imag(xi_right), '-');  
title("imag xi");
xlabel("two photon detuning");

figure(4);
hold off;
plot(Ep.^2, real(xi_left), '-', Ep.^2, real(xi_right), '-');  
title("real xi");
xlabel("two photon detuning");

figure(5);
hold off;
%plot(Ep.^2, (Ipos-Ineg), '-');  
semilogx(Ep.^2, (Ipos-Ineg), '-');  
%semilogx(Ep.^2, (Ipos-Ineg)./(Ep.^2), '-');  
title("BPD signal xi");
xlabel("two photon detuning");

%figure(1); 
	%hold off;
	%plot(detuning_freq, imag(xi_linear), '-1;linear;');  
	%hold on;
	%plot(detuning_freq, imag(xi_left),   '-2;left;');  
	%plot(detuning_freq, imag(xi_right),  '-3;right;');  
	%title("probe absorption");
	%hold off;
%figure(2); 
	%hold off;
	%plot(detuning_freq, real(xi_linear), '-1;linear;');  
	%hold on;
	%plot(detuning_freq, real(xi_left),   '-2;left;');  
	%plot(detuning_freq, real(xi_right),  '-3;right;');  
	%title("probe dispersion");
	%hold off;