- Parent Category: 04 Waves
- Category: 04 Light
- Created: Monday, 30 April 2018 17:26
- Last Updated: Tuesday, 03 March 2020 10:36
- Published: Monday, 30 April 2018 17:26
- Written by Fremont
- Hits: 3592
Circular Electromagnetic Wave Polarizer
An more general elliptical (circular is a special case where Ex=Ez) polarized Electromagnetic Wave travels from left to right.
After passing through the first polarizer, the Electromagnetic Wave now is linearly polarized along the direction of the polarizer, θ₁ .This is usually how linearly polarized light is formed.
After passing through the second polarizer, the Electromagnetic Wave now is further linearly polarized along the direction of the second polarizer, θ₂. If θ₂=θ₁, the light passes through without any difference. If θ₂-θ₁=90 degree, the light passes through is completely blocked.
After passing through the third polarizer,the Electromagnetic Wave now is further linearly polarized along the direction of the third polarizer, θ₃. If θ₃ = θ₂= θ₁,the linearly polarized light passes through without any difference. If θ₃-θ₂=90 degree and θ₂-θ₁=0 degree, light inbetween polarizer 2 and 3 is unchanged, still linearly polarized, but light after polarizer 3 is completely blocked.
Electric Field is represented as Red color segments
Magnetic Field is represented as Blue color segments
Polarizer 1 is Orange color
Polarizer 2 is Green color
Polarizer 3 is Magenta color
You can modify:
θ₁ is the angle of the first polarizer
θ₂ is the angle of the second polarizer
θ₃ is the angle of the third polarizer
under the combobox
yp₁ is the position of the first polarizer
yp₂ is the position of the second polarizer
yp₃ is the position of the third polarizer
under more? it is possible to explore these other more advance variables
Ex: electric field magnitude in x direction
Ez: electric field magnitude in z direction
phase: the phase difference between E and B
vy: wave velocity. which imply Ez/Bx=vy, where Bx is magnetic field magnitude
T :period of the wave. which imply wavelength(lamda)=vy*T
wavelength: the length of one cycle of the wave
Please notice that E/B field are in phase when electromagnetic is travel in vacuum.
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Fremont Teng; Fu-Kwun Hwang; lookang
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