View by Category

The presentation will start after a short

(15 second) video ad from one of our sponsors.

Hot tip: Video ads won’t appear to registered users who are logged in. And it’s free to register and free to log in!

(15 second) video ad from one of our sponsors.

Hot tip: Video ads won’t appear to registered users who are logged in. And it’s free to register and free to log in!

Loading...

PPT – Chapter 6: Polarization of light PowerPoint presentation | free to download - id: 270a7e-NjA1M

The Adobe Flash plugin is needed to view this content

About This Presentation

Write a Comment

User Comments (0)

Transcript and Presenter's Notes

Chapter 6 Polarization of light

First, review the chapter onAtomic Structure

- The elements

- Preliminaries and definitions
- Plane-wave approximation E(r,t) and B(r,t) are

uniform in the plane ? k - We will say that light polarization vector is

along E(r,t) (although it was along B(r,t) in

classic optics literature) - Similarly, polarization plane contains E(r,t) and

k

Simple polarization states

- Linear or plane polarization
- Circular polarization

- Which one is LCP, and which is RCP ?

Electric-field vector is seen rotating

counterclockwise by an observer getting hit in

their eye by the light (do not try this with

lasers !)

Electric-field vector is seen rotating clockwise

by the said observer

Simple polarization states

- Which one is LCP, and which is RCP?
- Warning optics definition is opposite to that in

high-energy physics helicity - There are many helpful resources available on the

web, including spectacular animations of various

polarization states, e.g., http//www.enzim.hu/sz

ia/cddemo/edemo0.htm

Go to Polarization Tutorial

More definitions

- LCP and RCP are defined w/o reference to a

particular quantization axis - Suppose we define a z-axis
- ?-polarization linear along z
- ? LCP (!) light propagating along z
- ?- RCP (!) light propagating along z

If, instead of light, we had a right-handed wood

screw, it would move opposite to the light

propagation direction

Elliptically polarized light

- a semi-major axis b semi-major axis

Unpolarized light ?

- Is similar to free lunch in that such thing,

strictly speaking, does not exist - Need to talk about non-monochromatic light
- The three-independent light-source model (all

three sources have equal average intensity, and

emit three orthogonal polarizations - Anisotropic light (a light beam) cannot be

unpolarized !

Angular momentum carried by light

- The simplest description is in the photon picture

- A photon is a particle with intrinsic angular

momentum one ( ) - Orbital angular momentum
- Orbital angular momentum and Laguerre-Gaussian

Modes (theory and experiment)

Helical Light Wavefronts

Formal description of light polarization

- The spherical basis

- e1 ? LCP for light propagating along z

Lagging by ?/2

? LCP

Decomposition of an arbitrary vector E into

spherical unit vectors

Recipe for finding how much of a given basic

polarization is contained in the field E

Polarization density matrix

For light propagating along z

- Diagonal elements intensities of light with

corresponding polarizations - Off-diagonal elements correlations
- Hermitian
- Unit trace

- ? We will be mostly using normalized DM where

this factor is divided out

Polarization density matrix

- DM is useful because it allows one to describe

unpolarized

- and partially polarized light
- Theorem Pure polarization state ? ?2?
- Examples
- Unpolarized Pure circular polarization

Visualization of polarization

- Treat light as spin-one particles
- Choose a spatial direction (?,f)
- Plot the probability of measuring

spin-projection 1 on this direction

? Angular-momentum probability surface

- Examples
- z-polarized light

Visualization of polarization

- Examples
- circularly polarized light propagating along z

Visualization of polarization

- Examples
- LCP light propagating along ??/6 f ?/3
- Need to rotate the DM details are given, for

example, in

? Result

Visualization of polarization

- Examples
- LCP light propagating along ??/6 f ?/3

Description of polarization with Stokes parameters

- P0 I Ix Iy Total intensity
- P1 Ix Iy Lin. pol. x-y
- P2 I?/4 I- ?/4 Lin. pol. ? ?/4
- P3 I I- Circular pol.

Another closely related representation is the

Poincaré Sphere

See http//www.ipr.res.in/othdiag/zeeman/poincare

2.htm

Description of polarization with Stokes

parameters and Poincaré Sphere

- P0 I Ix Iy Total intensity
- P1 Ix Iy Lin. pol. x-y
- P2 I?/4 I- ?/4 Lin. pol. ? ?/4
- P3 I I- Circular pol.

- Cartesian coordinates on the Poincaré Sphere are

normalized Stokes parameters

P1/P0, P2/P0 , P3/P0 - With some trigonometry, one can see that a state

of arbitrary polarization is represented by a

point on the Poincaré Sphere of unit radius - Partially polarized light ? Rlt1
- R degree of polarization

Jones Calculus

- Consider polarized light propagating along z
- This can be represented as a column (Jones)

vector - Linear optical elements ? 2?2 operators (Jones

matrices), for example - If the axis of an element is rotated, apply

Jones Calculus an example

- x-polarized light passes through quarter-wave

plate whose axis is at 45? to x - Initial Jones vector
- The Jones matrix for the rotated wave plate is
- Ignore overall phase factor ?
- After the plate, we have
- Or
- expected circular polarization

About PowerShow.com

PowerShow.com is a leading presentation/slideshow sharing website. Whether your application is business, how-to, education, medicine, school, church, sales, marketing, online training or just for fun, PowerShow.com is a great resource. And, best of all, most of its cool features are free and easy to use.

You can use PowerShow.com to find and download example online PowerPoint ppt presentations on just about any topic you can imagine so you can learn how to improve your own slides and presentations for free. Or use it to find and download high-quality how-to PowerPoint ppt presentations with illustrated or animated slides that will teach you how to do something new, also for free. Or use it to upload your own PowerPoint slides so you can share them with your teachers, class, students, bosses, employees, customers, potential investors or the world. Or use it to create really cool photo slideshows - with 2D and 3D transitions, animation, and your choice of music - that you can share with your Facebook friends or Google+ circles. That's all free as well!

For a small fee you can get the industry's best online privacy or publicly promote your presentations and slide shows with top rankings. But aside from that it's free. We'll even convert your presentations and slide shows into the universal Flash format with all their original multimedia glory, including animation, 2D and 3D transition effects, embedded music or other audio, or even video embedded in slides. All for free. Most of the presentations and slideshows on PowerShow.com are free to view, many are even free to download. (You can choose whether to allow people to download your original PowerPoint presentations and photo slideshows for a fee or free or not at all.) Check out PowerShow.com today - for FREE. There is truly something for everyone!

You can use PowerShow.com to find and download example online PowerPoint ppt presentations on just about any topic you can imagine so you can learn how to improve your own slides and presentations for free. Or use it to find and download high-quality how-to PowerPoint ppt presentations with illustrated or animated slides that will teach you how to do something new, also for free. Or use it to upload your own PowerPoint slides so you can share them with your teachers, class, students, bosses, employees, customers, potential investors or the world. Or use it to create really cool photo slideshows - with 2D and 3D transitions, animation, and your choice of music - that you can share with your Facebook friends or Google+ circles. That's all free as well!

For a small fee you can get the industry's best online privacy or publicly promote your presentations and slide shows with top rankings. But aside from that it's free. We'll even convert your presentations and slide shows into the universal Flash format with all their original multimedia glory, including animation, 2D and 3D transition effects, embedded music or other audio, or even video embedded in slides. All for free. Most of the presentations and slideshows on PowerShow.com are free to view, many are even free to download. (You can choose whether to allow people to download your original PowerPoint presentations and photo slideshows for a fee or free or not at all.) Check out PowerShow.com today - for FREE. There is truly something for everyone!

presentations for free. Or use it to find and download high-quality how-to PowerPoint ppt presentations with illustrated or animated slides that will teach you how to do something new, also for free. Or use it to upload your own PowerPoint slides so you can share them with your teachers, class, students, bosses, employees, customers, potential investors or the world. Or use it to create really cool photo slideshows - with 2D and 3D transitions, animation, and your choice of music - that you can share with your Facebook friends or Google+ circles. That's all free as well!

For a small fee you can get the industry's best online privacy or publicly promote your presentations and slide shows with top rankings. But aside from that it's free. We'll even convert your presentations and slide shows into the universal Flash format with all their original multimedia glory, including animation, 2D and 3D transition effects, embedded music or other audio, or even video embedded in slides. All for free. Most of the presentations and slideshows on PowerShow.com are free to view, many are even free to download. (You can choose whether to allow people to download your original PowerPoint presentations and photo slideshows for a fee or free or not at all.) Check out PowerShow.com today - for FREE. There is truly something for everyone!

For a small fee you can get the industry's best online privacy or publicly promote your presentations and slide shows with top rankings. But aside from that it's free. We'll even convert your presentations and slide shows into the universal Flash format with all their original multimedia glory, including animation, 2D and 3D transition effects, embedded music or other audio, or even video embedded in slides. All for free. Most of the presentations and slideshows on PowerShow.com are free to view, many are even free to download. (You can choose whether to allow people to download your original PowerPoint presentations and photo slideshows for a fee or free or not at all.) Check out PowerShow.com today - for FREE. There is truly something for everyone!

Recommended

«

/ »

Page of

«

/ »

Promoted Presentations

Related Presentations

Page of

Page of

CrystalGraphics Sales Tel: (800) 394-0700 x 1 or Send an email

Home About Us Terms and Conditions Privacy Policy Contact Us Send Us Feedback

Copyright 2015 CrystalGraphics, Inc. — All rights Reserved. PowerShow.com is a trademark of CrystalGraphics, Inc.

Copyright 2015 CrystalGraphics, Inc. — All rights Reserved. PowerShow.com is a trademark of CrystalGraphics, Inc.

The PowerPoint PPT presentation: "Chapter 6: Polarization of light" is the property of its rightful owner.

Do you have PowerPoint slides to share? If so, share your PPT presentation slides online with PowerShow.com. It's FREE!

Committed to assisting Berkeley University and other schools with their online training by sharing educational presentations for free