A beam of unpolarized light carries 2000 W/m2 down onto an air-plas...

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A beam of unpolarized light carries 2000 W/m2 down onto an air-plasitc interface. It is found that of the light reflected at the interface 300 W/m2 is polarized with its E-field perpendicular to the plane of incidence and 200 W/m2 parallel to the plane of incidence. Determine the net transmittance across the interface. Using Figure 4.56, estimate the angle of incidence of the beam. (a) 1.0 T1 0.5 nri=1.5 R 30 60 90 oi (degrees) (b) 1.0 Ti 0.5 n.==1.5 R P 30 60 90 0j (degrees) Figure 4.56 Reflectance and transmittance versus incident angle. perpendicular to the incident plane is 250 W/m². It follows from Eqs. (4.56) and (4.57) that R I =17 = I. (4.61) R1 = r (4.62) n,cos6, T1 = 7 (4.63) ni cos0 and T1= n,cost 0, 17 (4.64)

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