1 files changed, 0 insertions, 152 deletions
diff --git a/beam_tracing/prism_disk_coupling.m b/beam_tracing/prism_disk_coupling.m
deleted file mode 100644
index d89806c..0000000
--- a/beam_tracing/prism_disk_coupling.m
+++ /dev/null
@@ -1,152 +0,0 @@
-function prism_disk_coupling(prism_angle_in_degrees, n_disk, n_prism, coupling_description)
-%% Calculates incident angle for proper coupling into the disc via prism
-% prism_angle_in_degrees -  angle of the prism faces in degrees
-% coupling_description   -  short annotation of the situation
-%  for example:
-%    coupling_description='Rutile prism, MgF_{2} disk, p-polarization';
-
-prism_angle = prism_angle_in_degrees*pi/180; 
-
-%% critical angle for beam from prism to disk
-% recall n_d*sin(theta_disk)=n_prism*sin(theta_prism) where angles are counted from normal to the face
-% and we want theta_disk to be 90 degrees for the total internal reflection
-theta_prism=asin(n_disk/n_prism);
-% convert to degrees
-theta_prism_in_degrees=theta_prism*180/pi
-
-%% now lets see what angle it does with other face of the prism
-theta_prism_2=(prism_angle - theta_prism);
-theta_prism_in_degrees_2=theta_prism_2*180/pi
-
-%% now we calculate refracted angle out of the prism into the air with respect to the normal
-% positive means above the normal
-asin_arg=n_prism*sin(theta_prism_2);
-if (abs(asin_arg)>1) error('quiting: at the right prism face  we experienced total internal reflection'); end
-theta_air=asin(asin_arg);
-% convert to degrees
-theta_air_in_degrees=theta_air*180/pi
-
-%% angle in the air relative to horizon
-theta_air_rlh=(theta_air+( pi/2 - prism_angle) );
-theta_air_rlh_in_degrees=theta_air_rlh*180/pi
-
-%% Lets make a picture
-% 1st face of the prism lays at y=0 and spans from x=-1 to x=1
-x_face_1=linspace(-1,1);
-y_face_1=0*x_face_1;
-% 2nd face to the right of origin  and at angle prism_angle with respect to negative x direction
-x_face_2=linspace(1,0);
-y_face_2=(1-x_face_2)*tan(prism_angle);
-% 3rd face to the left of origin  and at angle prism_angle with respect to negative x direction
-x_face_3=linspace(-1,0);
-y_face_3=(x_face_3+1)*tan(prism_angle);
-
-%% draw prism
-figure(1); hold off;
-plot(x_face_1, y_face_1, 'k-', x_face_2, y_face_2, 'k-', x_face_3, y_face_3, 'k-');
-hold on
-
-%% disk center will be located in point (0,-R);
-R=.25;
-dc_x=0; dc_y=-R;
-x_disk=dc_x+R*cos(linspace(0,2*pi));
-y_disk=dc_y+R*sin(linspace(0,2*pi));
-plot(x_disk,y_disk,'k-')
-
-
-%% beam trace inside the prism
-% crossing of the beam with 1st (right) face of the prism
-% we are solving cot(theta_prism)*x=tan(prism_angle)*(1-x)
-x_cross_1=tan(prism_angle)/(tan(prism_angle)+cot(theta_prism));
-y_cross_1=x_cross_1*cot(theta_prism);
-x_beam_prism_1=linspace(0,x_cross_1);
-y_beam_prism_1=x_beam_prism_1*cot(theta_prism);
-plot(x_beam_prism_1, y_beam_prism_1, 'r-');
-
-%% beam out of prism
-x_out_strt=x_cross_1;
-y_out_strt=x_cross_1*cot(theta_prism);
-
-if (abs(theta_air_rlh)<pi/2) x_out_stop=1; else x_out_stop=0; end
-x_out_1=linspace(x_out_strt, x_out_stop);
-y_out_1=y_out_strt+tan(theta_air_rlh)*(x_out_1-x_out_strt);
-plot(x_out_1, y_out_1, 'r-');
-
-%% draw normal at the point of 1st face intersection
-theta_norm_rlh=pi/2-prism_angle;
-% coordinates of normal outside the prism
-x_norm_out=linspace(x_cross_1,1);
-y_norm_out=y_cross_1+(x_norm_out-x_cross_1)*tan(theta_norm_rlh);
-
-% coordinates of normal inside the prism
-x_norm_in=linspace(x_cross_1,0);
-y_norm_in=y_cross_1+(x_norm_in-x_cross_1)*tan(theta_norm_rlh);
-plot(x_norm_out, y_norm_out, 'b-', x_norm_in, y_norm_in, 'b-');
-
-%% arc to show theta_air
-R_arc=.1; 
-phi_arc=linspace(theta_air_rlh,theta_norm_rlh);
-x_arc_air=x_cross_1+R_arc*cos(phi_arc);
-y_arc_air=y_cross_1+R_arc*sin(phi_arc);
-plot(x_arc_air, y_arc_air, 'b-');
-%% annotation theta_air_in_degrees
-str=sprintf('theta_{a}=%.1f',theta_air_in_degrees);
-str=strcat('\',str,'^{o}');
-text(x_arc_air(end)+.05,y_arc_air(end), str);
-
-%% normal at the disk contact
-y_norm_in=linspace(0.,0.5);
-x_norm_in=y_norm_in*0;
-plot(x_norm_in, y_norm_in, 'b-');
-
-%% arc to show theta_prism
-R_arc=.1; 
-phi_arc=linspace(pi/2-theta_prism,pi/2);
-x_arc_prism=R_arc*cos(phi_arc);
-y_arc_prism=R_arc*sin(phi_arc);
-plot(x_arc_prism, y_arc_prism, 'b-');
-%% annotation theta_air_in_degrees
-str=sprintf('theta_{p}=%.1f',theta_prism_in_degrees);
-str=strcat('\',str,'^{o}');
-text(x_arc_prism(1)+0.05, y_arc_prism(1), str);
-
-%% arc to show theta_prism_2
-R_arc=.1; 
-phi_arc=linspace(theta_norm_rlh+theta_prism_2+pi,theta_norm_rlh+pi);
-x_arc_prism_2=x_cross_1+R_arc*cos(phi_arc);
-y_arc_prism_2=y_cross_1+R_arc*sin(phi_arc);
-plot(x_arc_prism_2, y_arc_prism_2, 'b-');
-%% annotation theta_air_in_degrees
-str=sprintf('theta_{p2}=%.1f',theta_prism_in_degrees_2);
-str=strcat('\',str,'^{o}');
-text(x_arc_prism_2(1)+.05,y_arc_prism_2(1), str);
-
-%% arc to show prism angle
-R_arc=.1; 
-phi_arc=linspace(pi, pi-prism_angle);
-x_arc=1+R_arc*cos(phi_arc);
-y_arc=0+R_arc*sin(phi_arc);
-plot(x_arc, y_arc, 'b-');
-%% annotate prism angle
-str=sprintf('theta_{prism}=%.1f',prism_angle_in_degrees);
-str=strcat('\',str,'^{o}');
-text(.52, 0.06, str);
-
-
-%% General annotation
-str=sprintf('n_{disk}=%.3f',n_disk);
-text(-0.9,1.1, str);
-
-str=sprintf('n_{prism}=%.3f',n_prism);
-text(-0.9,1.2, str);
-
-text(-0.9, 1.3, coupling_description);
-
-% force same aspect ratio for axis
-axis([-1,1,-0.5,1.5],'equal');
-
-%% output of the plot to the file
-print('prism_disk_coupling.eps','-depsc2');
-print('prism_disk_coupling.png');
-
-end