Polarization characterizes the oscillations in time the electromagnetic field is doing in the plane perpendicular to the propagation direction of a wave

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Optics phenomenon with my glasses?

When I look through my glasses toward the extreme left, a very odd and intriguing phenomenon occurs: The border of everything I see is lined with a hazy blue lining on the left and a hazy yellow ...
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1answer
35 views

Polarization of the Sky?

I was hiking and noticed as I tilted my sunglasses (which are probably polarized), right at the horizon where the sky was against a mountain, it would change from lighter to darker blue. This only ...
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23 views

How to polarize a laser beam

I'm working on an optic project that I need my laser beam to be polarized. Do you a simple way to polarize my laser beam?
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1answer
30 views

Circular polarisation destroying interference pattern for double slit

I have been trying to mathematically explain the empirical result that putting orthogonal polarisers (quarter-wave plates) behind the two slits of a double-slit setup will erase the interference ...
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1answer
32 views

Interference of Beams with Different Polarizations

I have read in many places that orthogonally polarized light beams do not interfere. However, I also know that orthogonal vectors, such as force, do affect each other and give a resulting force. So, ...
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1answer
26 views

Connection between Polarization and Coherence in optics

It is not completely clear to me how the notions of polarization and coherence, in optics, work together! I quite understand both of them but it's still hard to grasp their deep connection. I'm quite ...
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Do new LCD TVs have TFT [migrated]

I am writing an essay about LCDs, the websites I've used non of them mentions anything about the dates and eras that newer technologies were used in LCDs, so wondering, does anyone know whether TFT is ...
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1answer
146 views

what happens inside linear polarizer sheet (at microscopic level) when unpolarized light falls on it?

(1) What happens at microscopic level when unpolarized light falls on a linear polarizer sheet ? i.e. Due to what thing inside polarizer sheet, only those EM waves are passed whose plane of vibration ...
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30 views

Parallel-Perpendicular Polarizer [closed]

I am looking for group of material that behaves according to the following: (1) When a certain laser light passes perpendicular to the surface of the material it enters and exits unimpeded ...
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2answers
47 views

Is it possible to reverse the polarity of already polarized light using passive materials?

For a gizmo idea that I have, I want to understand if it's possible to "reverse/turn" the polarity of light using passive, relatively thin and cheap films, similar to what we see in 3d glasses or TN ...
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0answers
21 views

Why are most antennas in cellular networks +/- 45° polarized?

I've just been asked a strange question that I cannot find an answer to (even on the internet it seems I can't find any explanation for this) and I ended up wondering why most of the antennas which ...
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19 views

type of polarization required to generate surface plasmon resonance

The generation of surface plasmon depends on the polarization state of the impinging light beam. If the polarization of the beam impinging a nanosphere is along the z axis then the dipole radiation ...
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1answer
45 views

Problem on Malus law? doesnt work on certain angles [closed]

if Unpolarized Light falls on two polarizing sheets placed one on top of other. what must be the angle between the characteristics directions of the sheet a) if the intensity of the ...
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1answer
63 views

How is polarization vector in QFT related to polarization in classical electrodynamics?

As i know in classical electrodynamics polarization shows the orientation of the electric vector in a plane perpendicular to the direction of propagation of light. But in quantum field theory ...
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5 views

Verdet Constant and optical pumping

While studying Faraday rotation (linear magneto-optic rotation) I came across a fact that faraday rotation can be enhanced. Verdet constant which depends on the wavelength can be enhanced as change in ...
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0answers
22 views

Combining wave plates?

In the context of classical electromagnetism, is it always possible to reproduce the action of a large number of half-wave plates and quarter wave-plates with that of a single half-wave plate and a ...
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0answers
24 views

3D glasses and reflection/polarisation [duplicate]

Hi all, Tonight I'm going to see a 3D film so I thought I'd check whether I had any old 3D glasses around the house. Found a pair of "RealD" glasses. Anyhow, I assume that the glasses use some ...
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1answer
34 views

Circularly polarized light and polarizing filter

Does circularly polarized light pass through a linear polarizing filter, regardless of the orientation of such filter?
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1answer
25 views

Polarization type/direction of $E$ field

I have an E field given as $E(z) = [xE_a - yjE_b]\exp(-jkz)$ and I know the answer is that the field is right-hand circularly/elliptically polarized depending on whether $E_a = E_b$. Can someone show ...
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1answer
19 views

Use two polarizing filter without liquid crystal between them to render static image

I'm going to demonstrate the work of polarizing filter. I have a tablet for this purpose with disassembled LCD panel which is fine but it is bulky and overkill. Is there any other material that may ...
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1answer
27 views

Notation of polarization of light

Upon my research of polarization of light I stumbled upon the following formula: What do the three dots mean? I have never seen them before. Edit: Found this notation in the book "Nonlinear fiber ...
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42 views

Electric polarization in terms of berry phase?

I was reading a text in which Electric polarization in terms of Berry phase was defined as $P=\frac{e}{2\pi}\sum_{n}\int A_n (k) dk$ under gauge transformation $P\rightarrow P+ne$ (which means ...
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1answer
45 views

What is the fraction of the incident intensity passing through polarized sheets?

Unpolarized light is incident on a set of three polarizing sheets as shown in the figure at right. The polarizing directions of the sheets make angles 10°, 55° and 85° to the vertical. What fraction ...
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31 views

Phase added on reflection at a beam splitter?

If we have light of a particular phase that is indecent on a beam splitter, I assume the transmitted beam undergo's no phase change. But I thought that the reflected beam would undergo a phase change ...
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21 views

Are the EM waves that result from each of these processes distinguishable? Phase of light upon emission

In case 1, you have a single source of light that you pass through a diagonally oriented linear polarizer and then a half waveplate, such that the horizontal and vertical components become $\pi$ out ...
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2answers
68 views

Decoherence of a Coherent Beam

If retarding films (i.e. wave plates) can retard the electric components of light (based on the films thickness) without affecting it's direction, couldn't I use a retarding film of randomly varying ...
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1answer
32 views

Polarization and Reflection [duplicate]

The polarization is a property of waves that can oscillate with more than one orientation. Given this, when the light is reflected from a surface, does the reflection change the property/orientation ...
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0answers
46 views

3D movie optics mathematics

I get the idea that we use two polarized light sources and a parallax rendered film such that the objects seem to resemble true parallax in our eyes once it passes through the polarized glasses, but ...
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0answers
11 views

Polarization in LCDs why the light need to be polorized twice? [closed]

In Lcd Screens there is a prcess called polarization. Two question about it: 1. Why is it needed to pass the light through two polarizers ? 2. How des a pixel devide the light to three sub pixel and ...
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1answer
30 views

Polarisation by Reflection - oscillation direction

I'm currently studying polarisation by reflection, and have come across two pieces of information from the same source, which I can't seem to understand on how they differ. The oscillation direction ...
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2answers
3k views

Is true black possible?

Black is the absence of light because it absorbs light, but when we create black paint or black objects, light is always reflected, either in all directions in matte or smoothly in shiny black ...
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3answers
127 views

Is the output of a laser pointer polarized or not?

How to verify it? Is a laser necessarily polarized? I have a laser pointer with wavelength 532nm in hand.
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1answer
48 views

My glasses seem to be polarizing the light when they want. What is happening?

When I put the glasses on and I look at my computer monitor and I turn in a certain angle everything becomes black. When I do it on my laptop screen though I need a different angle. Finally when I ...
7
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1answer
159 views

Viewing computer screen through 3D glasses, why the asymmetry?

I have 3D glasses made up of plastic. First case: When I hold front side of the 3D glasses (by this I mean that side on which light falls) in front of a computer screen, light coming from screen is ...
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25 views

How can three consecutive polarizing filters let any light through? [duplicate]

Say I have three sheets of Polaroid in series. I also have an unpolarized light source. Let the first sheet of Polaroid be set up vertically so that only waves oscillating in the vertical direction ...
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1answer
29 views

Polarization of light for a fast moving observer

For a fast moving observer the frequency of light becomes shifted due to the (relativistic) Doppler effect. But what about the polarization of the light? Could it be, that e.g. circular polarized ...
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0answers
17 views

What is the exact definition of Magneto-optical Polar Kerr angle?

As stated in the title. I would like to know the exact definition of the Magneto-optical Polar Kerr angle. Whether it is just the rotation angle of the polarized light or it is something else?
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0answers
24 views

Entanglement of two particles with same values of the entangled parameters?

The question For an entangled state consisting of systems A and B, if A is measured when does the wavefunction at B collapse? contains next entangled state: If there are two systems A and B, with ...
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1answer
46 views

Amplitude of eliptically polarised light

In elliptically polarized light, can one define something called amplitude of Electric field? If yes, how do we determine it?
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1answer
24 views

Polarized Filtering Frequency Shift?

A polarized filter is exposed to a unpolarized light source. The output of the filter should be of lower intensity, hence lower energy. Should not the filtered light be of a lower frequency to ...
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0answers
30 views

What does electric field of unpolarized light look like when measured?

When we talk about fermions in mixed state, we say that their state can't be described by a wavefunction and just compute all the probabilities using density matrix. That's OK because the ...
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1answer
51 views

Polarization of light upon reflection

I was wondering (since I've looked pretty hard and haven't been able to find anything)- are there any models that explain the polarization of light upon reflection? Everywhere I've looked I've seen ...
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2answers
91 views

What happens when both of Polarizing filter in LCD screen are Horizontal

What would be the result if we replace the vertical polarizing filter in LCD device (screen) with a horizontal filter, what could we see exactly? Would we see the same if we use only one horizontal ...
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2answers
113 views

What is fundamentally happening that causes light to change its orientation when repeatedly polarized? (edited)

When light is passed through two polarizers successively, its intensity and orientation afterwards depends on the angle between the polarizers and the orientation of the most recent polarizer, ...
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1answer
52 views

Polarization vector identity in Minkowski space?

Playing around with numerical light-like momenta $p^\mu_1,p^\mu_2$ (light-like meaning ${p_1}^\mu {p_1}_\mu={p_2}^\mu {p_2}_\mu=0$) and corresponding polarization vectors ...
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1answer
98 views

What causes these rainbow effects using a polarizing filter on an airplane?

I know that light reflected from a surface at 45° is polarized and that for a similar reason skylight arriving from a direction orthogonal to the sun is polarized too. Photographers make use of this ...
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2answers
53 views

Compact Disc Optics - Why use a linear polariser and a quarter wave plate?

I just came across this website about the application of a quarter wave plate. Link: Compact Disc Optics. My question is why does the beam need to be linearly and then circularly polarised before ...
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1answer
37 views

Significance of colours in photoelasticity

I already checked similar question at Physics SE, but none gives me a clear answer, also it is a bit difficult for me to understand it from wikipedia as I couldn't find relating material to my ...
3
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2answers
116 views

How to count the number of modes/polarizations of a Gaussian field theory?

A Gaussian (free) field theory is described by a quadratic action of the field, e.g. $S=\int\psi^\dagger K\psi$ (or $S=\frac{1}{2}\int\phi^\intercal K\phi$ for real fields). Usually one just need to ...
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39 views

Does photon polarization take place without scattering processes?

Behind two perpendicular crossed polarisation filters (for visible light) the intensity of light will be zero. After installing a third filter between the two others non parallel to each of them some ...