WaveOpt_31

# WaveOpt_31 - Department of Electrical and Computer...

This preview shows pages 1–11. Sign up to view the full content.

Department of Electrical and Computer Engineering ECSE 527 Optical Engineering olarization Polarization Sources: Hecht ‘Optics’ Chapter 8 Andrew Kirk 2010 Polarization 1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Polarization •T h e electric field vector of a light wave gives it a polarization state • Different polarization states interact with matter in ifferent ways different ways h i s gives us a powerful tool for: – Splitting light – Combining light – Deflecting light – Modulating light •I n this section we will look at polarization principles and plications ©AGK 2010 Polarization 2 applications
Learning outcomes fter taking this section you should be able to: After taking this section you should be able to: •D e s c r i b e the different polarization states of an EM wave •W r i t e these states down in mathematical notation pply alus law r olari ers Apply Malus’ law for polarizers e s c r i b e some different polarizers and polarizing beam splitters e s c r i b e polarized light at an interface as a p or s state . • Explain the concept of birefringence and dichroism • Explain the operation of a wave plate or retarder •A pply the Stokes parameters and Jones vectors to model polarization pp y p p states and polarizing devices. ©AGK 2010 Polarization 3

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Contents • Definition • Types of polarization: linear, circular, elliptical •P o l a r i z e r s i t i ti l d td • Anisotropic materials and retarders • Mathematical techniques: Jones matrices. ©AGK 2010 Polarization 4
Application of polarization : CD pick up inear polarization PBS Collimat or Lens Quart er-wave Plat e Disc Linear polarization Laser Diode Diffract ion Grat ing Concave Singlet Object ive Cylindrical hat are the polarization Photodiode Array What are the polarization states in this system ? ©AGK 2010 Polarization 5 y

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Polarization applets http://webphysics.davidson.edu/physlet_resources/dav_opti cs/Examples/polarization.html ttp://www amanogawa com/archive/Polarization/Polarizati http://www.amanogawa.com/archive/Polarization/Polarizati on 2.html ©AGK 2010 Polarization 6
Review: Linear Polarization ( P state) y y E x E x Horizontal linear polarization Vertical linear polarization z E z E E x ( z , t )= x E 0 x cos kz t E y ( z , t y E 0 y cos kz t + E 0y If =0, ± π , ±2 π result = linear polarization at angle . ©AGK 2010 Polarization 7 E 0x  x y E E Tan 0 0

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Circular polarization •W h e n x and y components have equal magnitude but out f phase by 90 of phase by 90 : •I . e . = 2 2 m =– 2 2 m or E E 0 ˆ x cos kz   t ˆ y cos kz   t For first case: E E 0 ˆ x cos kz   t ˆ y sin kz   t 2 ©AGK 2010 Polarization 8 This is circular polarization
Circular polarization y y E y x x z E x z E E = 2 2 m E 0x = E 0y =E 0 Left circular (L state) ©AGK 2010 Polarization 9 =– 2 2 m Right circular (R state)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Calcite crystal in circularly polarized beam
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 09/28/2010 for the course ECSE ECSE 527 taught by Professor Kirk during the Winter '10 term at McGill.

### Page1 / 89

WaveOpt_31 - Department of Electrical and Computer...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online