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+%% Calculates incident angle for proper coupling into the disc via prism
+
+% angle of the prism faces in degrees
+prism_angle_in_degrees = 45;
+
+prism_angle = prism_angle_in_degrees*pi/180;
+
+%% prism index of refraction
+% Rutile (TiO2) see http://refractiveindex.info/?group=CRYSTALS&material=TiO2
+n_rutile_o = 2.4885; % p - polarization
+n_rutile_e = 2.75324; % s - polarization
+
+n_prism=n_rutile_o ; % for horizontal or p polarization
+
+%% disk material index of refraction
+% Magnesium Fluoride (MgF2) see http://refractiveindex.info/?group=CRYSTALS&material=MgF2
+n_MgF2_o = 1.3751;
+n_MgF2_e = 1.38679;
+
+% Measured
+n_MgF2_p = 1.465; % p-polarization
+
+
+n_disk=n_MgF2_p;
+coupling_description='Rutile prism, MgF_{2} disk, p-polarization';
+
+% calculate coupling angle and draw coupling solution with annotations
+prism_disk_coupling(prism_angle_in_degrees, n_disk, n_prism, coupling_description);
+