1. A beam of p-polarised light is incident from air to a glass prism from side...

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1. A beam of p-polarised light is incident from air to a glass prism from side (as shown in fig.1) to introduce total internal reflection (TIR) at the top surface of the prism. The prism has a refractive index of 1.52. The refractive index of air is 1. (a) Derive a formula for a in terms of 0. [10 Marks] (b) Specify the range of incident angle 8 (note that could be negative. Negative 0 refers to light incident from the other side of the axis perpendicular to the interface of AC) that can induce TIR. [20 Marks] (c) At what incident angle the beam completely transmits through the interface AC without reflection. [10 Marks] P-pol H A 0 45 N n = 1.52 C B 1. A beam of p-polarised light is incident from air to a glass prism from side (as shown in fig.1) to introduce total internal reflection (TIR) at the top surface of the prism. The prism has a refractive index of 1.52. The refractive index of air is 1. (a) Derive a formula for a in terms of 0. [10 Marks] (b) Specify the range of incident angle 8 (note that could be negative. Negative 0 refers to light incident from the other side of the axis perpendicular to the interface of AC) that can induce TIR. [20 Marks] (c) At what incident angle the beam completely transmits through the interface AC without reflection. [10 Marks] P-pol H A 0 45 N n = 1.52 C B