University:
Santa Fe College
Course:
ETS 2527C | Electromechanical Components and Mechanisms
Academic year:

2024
Views:

110

Pages:

5
Author:

Jabin F.

Circularly Polarized Wave (C.P.): P.P + P.P = C.P Under certain conditions, E-field tracks a circular path with constant amplitude. R is along the +z direction. Circularly polarized: (E_{0} = const., t = t_{0} + E_{0}sin(\omega t)) Question: A beam of unpolarized light of intensity (I_{0}) falls on a system of four identical linear polarizers placed in a line as shown in the figure. The transmission axes of any two successive polarizers make an angle of (30^{\circ}) with each other. If the transmitted light has intensity (I), what is the ratio (I/I_{0})? Question: A beam of unpolarized light of intensity (I_{0}) falls on a system of four identical linear polarizers placed in a line as shown in the figure. The transmission axes of any two successive polarizers make an angle of (30^{\circ}) with each other. If the transmitted light has intensity (I), what is the ratio (I/I_{0})? Calculations: (I_{1} = \frac{I_{0}}{2}) (I_{2} = I_{1}cos^{2}30^{\circ} = \frac{3}{8}I_{0}) (I_{3} = \frac{3}{8}I_{0}cos^{2}30^{\circ} = \frac{9}{32}I_{0}) (I_{4} = \frac{9}{32}I_{0}cos^{2}30^{\circ} = \frac{27}{128}I_{0}) Answer: (I/I_{0} = 27/128) Visual Elements: Diagram: A diagram showing the arrangement of four linear polarizers with their transmission axes. Equations: Equations for calculating the intensity of light transmitted through each polarizer. Answer: The final answer, expressed as a ratio. Ques.2: Let (E = E_{0}(\hat{i} + i\hat{j})e^{i(kz-\omega t)}) c.p. (Option - c): Reflected plane wave to plane of incidence normal incident U.p. c.p E.p. p.p ex: 1. Partially p.p 2. E.p 3. E.p 4. p.p