Light beam for 2 sources are directed a polarizer. One of the sources consists o

Question

Light beam for 2 sources are directed a polarizer. One of the sources consists of un-polarized light. While the other consists of polarized light. The polarizer's axis is titles 37 degree relative to the polarization direction of the polarized beam. Both the polarized and un-polarized beam have an intensity of 12 watts/mctcr^2. Sketch the description dearly. calculate the aggregate amplitude just past the polarizer. at what angle, relative to the first polarizer's axis should polarizer be oriented in order that amplitude exiting it is just 10% of what entered. repeat part 'c' for exiting intensity dropping to 10%.

Explanation / Answer

intensity' = original intensity * cos^2(theta)

intensity' = 12 * cos^2(37)

intensity just past the polarizer = 7.653 W/m^2

0.1 * intensity = intensity * cos^2(theta)

angle = 71.57 degree

0.1 * 0.1 * intensity = 0.1 * intensity * cos^2(theta)

angle = 71.57 degree

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