Polarization Filters Video Lessons

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Problem: A beam of polarized light of intensity I 0 travels in the +z-direction and is incident on two linear polarizers (LP1 and LP2) and a quarter wave plate (QWP) as shown below, LP1 has a transmission axes (TA) parallel to the x-axis, the QWP has a fast axis oriented 45° with respect to the x-axis and LP2 has a TA oriented 25° with respect to the x-axis. The light in Regions I, II, and III has intensities I1, I2 and I3, respectively. Find I3/I2. a, I3/I2 = 0.82 b. I3/I2 = 0.18 c. I3/I2 = 1.0 d. I3/I2 = 0.88 e. I3/I2 = 0.50

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Problem Details

A beam of polarized light of intensity I 0 travels in the +z-direction and is incident on two linear polarizers (LP1 and LP2) and a quarter wave plate (QWP) as shown below, LP1 has a transmission axes (TA) parallel to the x-axis, the QWP has a fast axis oriented 45° with respect to the x-axis and LP2 has a TA oriented 25° with respect to the x-axis. The light in Regions I, II, and III has intensities I1, I2 and I3, respectively. Find I3/I2.

a, I3/I2 = 0.82

b. I3/I2 = 0.18

c. I3/I2 = 1.0

d. I3/I2 = 0.88

e. I3/I2 = 0.50

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Our tutors have indicated that to solve this problem you will need to apply the Polarization Filters concept. You can view video lessons to learn Polarization Filters. Or if you need more Polarization Filters practice, you can also practice Polarization Filters practice problems.

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