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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Polarization space, light singularities [on hold]

Who knows something about polarization space? What is the definition? I know that to describe the polarization state of a beam we need to find eigen-polarization states. I also know that for the ...
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36 views

definition of left and right circular polarization?

Which is the left and right circular polarization ? page 1 Wiki says this is right circular polarization ...
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29 views

How to better view LCD through polarized glasses

When I put on my polarized sunglasses and look at my LCD monitor, I found the best viewing angle to be at $45^\text{o}$ to the left. Obviously the ergonomics of tilting my head to view my screen ...
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45 views

Does a circularly polarized electromagnetic wave transfer angular momentum from the transmitter to a receiving antennae?

This question is about the rotation of macroscopic objects and looks at the magnetic vector of an electromagnetic wave. As basis for comparison, we consider an induction motor. The stator induces a ...
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53 views

Is it possible to create a pair of polarized, polarization-entangled photons?

Is there a light source which emits (mostly) polarization-entangled pairs of photons that have a known polarization angle, e.g. a certain angle in relation to the orientation of the source? Applying ...
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37 views

Field inside a dielectric spherical shell

I would like to find a detailed solution for the internal electric field of a polarized dielectric spherical shell in a uniform applied field.
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28 views

selection rules and polarization in magneto-optical traps

I have got a question concerning selection rules and polarization. In a magneto-optical trap, lasers & a magnetic field are used to trap atoms. In order to be capable of using the lasers as a trap,...
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38 views

Derivation of Specific Rotation formula?

This is sort of a weird question, so bear with me: I was reading about how chiral molecules rotate plane polarized light and decided to think of a "logical" formula for expressing the amount that ...
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5answers
112 views

How comes unpolarized light do not undergo destructive interference?

As far as I know, unpolarized light is defined as light which as no clear axis of polarization, but electric field vectors in all directions. However, I also know that electric fields can be ...
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1answer
30 views

What is the relation between polarization and wave front?

I'm reading about the angular momentum of light, in which wave fronts are like helix. When I checked for a circular polarization on the web, shapes look very similar to these helical structures, So I'...
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1answer
24 views

Active light polarization filter

I want to realise a (fast) active light polarization filter. I just need two states: 0° and 90° rotation of the filtering plane. Is it possible to use a "normal" LC film like in displays and just put ...
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9 views

What is the estimator that used to de-rotation of CMB polarization? [duplicate]

For de-rotation of CMB polarization we need to use of estimator for rotation angle. and used many estimator for this process.
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1answer
16 views

What happens if polarized light passes through calcite or some other birefringent material?

every explanation of birefringence I find talks about unpolarized light entering Calcite, but what if I use a polarized light? Will that mean that as I rotate the crystal the light will disappear then ...
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1answer
65 views

Do gravitational waves radiate isotropically?

Do gravitational waves radiate equally in all directions? If so, is this an inherent property of all gravitational waves or is it just due to how they are normally produced? In other words, in a ...
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Photons with half integer angular momentum - what's happening?

I have just read this article - what is happening? Analysing these beams within the theory of quantum mechanics they predicted that the angular momentum of the photon would be half-integer, and ...
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1answer
53 views

Unpolarized wave, $\Delta\varphi =\Delta \varphi(t)$?

I have seen a unpolarized wave defined in a number of places (e.g. here) as a wave such that: \begin{align} E_x&=E_0 \cos(kz-\omega t) \\ E_y&=E_0 \cos(kz-\omega t+\varphi) \end{align} Where $\...
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55 views

Integrating by parts [closed]

I am having little trouble with my professor's note. $$F=-\int{(dr)}{(\vec{\nabla} \cdot \vec{P}) \vec{E} }=\int{(dr)}{(\vec{P} \cdot \vec{\nabla} ) \vec{E} }$$ where F is force, P is polarization, ...
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9 views

Why long range ordering and higher order rotational symmetry leads to dense K-space ?

In case of Quasicrystals Why long range ordering and higher-order rotational symmetry leads to dense K-space ? And high rotational symmetry include modification in discrete spectral feature to ...
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8 views

Having trouble with linearly varying potential values (semiconductor band modeling)

One way to model an electric field-induced potential along a 1D semiconductor is: $$\phi(z) = eE_\mathrm{field}z\quad [\mathrm{eV}]$$ I'm troubled with the values, however. A typical electric ...
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48 views

Proportion of photons passing through three polarizers

I've started recently reading book "Quantum Computing, A Gentle Introduction". After each chapter there are exercises for self study. For some of them there are answers, for some not. So far I've been ...
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14 views

Is it correct that the polarized scatter of a polarized light source is max. orthogonal to the light source?

First of all, is the statement above correct? And if so, is there a constant gradient, with no polarized scatter parallel to the polarized source up to fully polarized at 90 degrees?
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1answer
46 views

What happens when two polarized lights of the same wavelength interfere at 90 degrees with each other?

am I right in assuming that if I cross two polarized lights of the same wavelength the result would be destructive interference? I don't mean 90 degrees as in 'orthogonal polarization', but the two ...
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Why does some peoples' hair look blue when I look out the train window while wearing sunglasses?

Specifically, when I look through the window, black hair looks blue when people pass the window outside, and black shiny benches look like somebody painted them blue. Pretty sure my sunglasses are ...
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Amplitude of unpolarized EM wave after a polarizer

The amplitude of a linearly polarized wave after a polarizer is $$E_1 = E_0\cos(\theta)$$ and the intensity is $$I_1 = I_0\cos^2(\theta)$$ Now for unpolarized light, the time averaged amplitude is ...
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Electric field inside a material

I was thinking about the polarisation, and how the electric field behaves inside the material of permittivity greater than one. I think to have understood what happens to D and P, but is not clear ...
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Why don't E&M fields change orientation after hitting a surface?

In essentially every derivation of the Fresnel equations, the general problem of radiation hitting a surface at a certain angle is broken into two parts (out of which we hope the solution any general ...
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Easiest way to levitate a ferromagnetic material that is not a permanent magnet?

I want to levitate an iron cube that is not a polarized permanent magnet. What is the easiest way to do this?
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18 views

How do particles entangle and how does polarization work? [closed]

I am trying to learn about how particles get entangled and when I searched it up I did not understand how polarization worked. I am still in elementary school so if please make the definition simple! ...
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1answer
44 views

Application of Snell's law for an extraordinary wave?

I have read [1] that when the light enters a birefringent material with optical axis perpendicular to the plane of incidence that the angle of refraction of the extraordinary wave can be found by ...
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What is the relationship between the E mode polarisation of the CMB and the velocity of the primordial plasma precisely?

I understand that the CMB is polarised into E and B modes due to Thompson scattering in the primordial plasma of the early universe. Also, I understand that this polarisation is directly related to ...
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1answer
44 views

Is it scientifically possible to stop a screens polarization by adding a layer? [closed]

Back story: At work we deal with confidential data, however our desk layout does not allow for screen privacy. We do not a privacy screens and are not allowed to take apart our screens. In searching ...
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Polarized Coherent Beam Hits a Polarizer Off-Polarization Angle While Varying Distance?

Just wondering about an experiment that should be easy to perform on an optical bench: A coherent beam is polarized. It then hits another polarizer which is set to permit a polarization angle off ...
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1answer
33 views

Why must the plane of polarization be the same for two waves to interfere?

While solving a problem that involved both the concepts, I stumbled upon the following fact, but I cannot somehow visualize the idea. Could anyone please give me some intuition as to why the above ...
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2answers
52 views

Double slit with opposite circular polarizers

Let's say I'll send linearly polarized light onto double slit but in front of one slit I'll have quarter wave plate and before the other I'll have 3/4th wave plate (half+quarter? minus quarter?) ...
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1answer
54 views

Could you use polarization filters to make a privacy screen?

I remember seeing that brusspup video where the polarization filter on the monitor was removed and put it in his glasses, causing only the wearer to see the screen. (, and) I was thinking, would ...
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Why can a solution show optical rotation?

Why can a solution show optical rotation? A solution, as a liquid, is rotationally isotropic, right? So, even if the molecules are chiral, because of the random orientation of the molecules, shouldn't ...
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Mueller matrix and Lorentz group

I have just learned about Stokes vectors and Mueller matrices for description of polarized light. In the text I studied there is clear restriction for the Stokes vector $\vec S$ that $S^2_0=S^2_1+S^...
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114 views

Jones matrices of a mystery device

When considering a Jones matrix $$J=\ \left( \begin{array}{ccc} \cos\phi & -\sin\phi \\ \sin\phi & \cos\phi \\ \end{array} \right) $$ I understand that the effect of a device described by ...
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Birefringence not caused by polarization?

Is there any other way for a material to be birefringent apart from it causing double refraction based on polarization? I.e. can a material cause double refraction in a way that does not depend on the ...
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2answers
70 views

Can a beam splitter distinguish between more than two polarizations?

The following is based on a very basic understanding of lasers, that may be approximate or altogether completely erroneous. Given a (single-mode) laser beam, a beam-splitting polarizer ...
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Why does Raman activity depend on polarizability?

Raman spectroscopy essentially records photoluminescence: (source) and a molecule is considered to be Raman active when there is a change of polarizability $\alpha$ (where $\mathbf{P}=\alpha \mathbf{...
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What is filtered through the linear polarization of EM light? E field, B field or both?

I know that for EM waves (i.e sunlight) for any E wave in any direction, there is B field perpendicular to it. However, when we pass that EM wave through the linear polarization filter, what actually ...
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78 views

Converting Stokes Parameters to Jones Vector

How do you convert a Stokes vector into a Jones vector? I am only concerned about fully polarised light, and I need to convert the Stokes parameters (or the azimuth and ellipticity angles) as measured ...
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65 views

Do gravitational waves have field components like electromagnetic waves?

One way I've been led to understand electromagnetic waves (and I accept that this might be a misconception I have) is that they 'self propagate' through empty space by virtue of the wave consisting of ...
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147 views

Polarization of light - Malus's law

I have recently learnt about polarization of light and Malus's Law. Also, I have learnt that a single polaroid allows half of the intensity of light incident on it to pass through (assuming that the ...
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Charged particle/cosmic ray track on sunglasses

I left my (polarized) sunglasses on car dashboard .. . Returned, and immediately noticed a strongly lightened, partially dotted streak across entire left lens, cutting diagonally from "northwest" to "...
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35 views

Polka dot beamsplitter. Is it good for gaussian beams

I am doing pump probe and I am looking for beam-splitter which will not affect beam polarization too much, as I intend to measure polarization dependencies. I have heard of polka-dot beam-splitters ...
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Why is reflected light polarised?

Why is reflected light polarised? I have learnt about Brewster's angle, and how at a particular angle all light reflected is polarised, but do not understand why. Is this something that could be ...
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66 views

Ferromagnets - Permanent?

When researching about the Curie-Temperature and magnets in general, something got me confused. What is the difference between a ferromagnet and a permanent magnet? In a ferromagnet the spins are ...