Polarization I Flashcards
Wave with electric and magnetic fields perpendicular to each other. Transverse wave
Electromagnetic wave
Longitudinal wave
Slinky, parallel
Transverse wave
Perpendicular
Oscillation occurs in a x,y plane perpendicular to the z direction of propagation
Transverse
Polarization is a property of _______ waves that describes their oscillations in (x,y) plane
Transverse
A completely random of waves vibrating in all planes
Unpolarized light
For electromagnetic waves propagating perpendicular to the plane of the paper, the double headed arrows show the vibration plane of the electrical field component for three different states
Polarized light
What are the three different polarization states?
Vertical, horizontal, and diagonal
A dipole with a vertical axis produces _________ polarized light
Vertically
A mixing of polarized and unpolarized waves
Partially polarized light
What are hte 4 fundamental properties of light?
- intensity (amplitude)
- wavelength
- polarization
- coherence
________ describes the directional orientation of the lights electric field in both space and time
Polarization
The vibration of the electric field is confined to a single plane
Plane-polarized light
From the vantage point along the Z axis, the electric field appears to trace a line, so the light may also be said to be _________
Linearly polarized
The electric friend for _________ light has no consistent plane of oscillation
Unpolarized
From the vantage point along the z axis, the electric field for polarized light can look like:
- linearly polarized (vertical)
- elliptically polarized
- circularly polarized
- linear polarized (horizontal)
What defines the polarization type of the light?
The trace of the electric field
Polarization properties of light can be changed by:
- selective absorption
- reflection
- scattering
- birefringance
The _________ selectively transmits all or most of the electric field parallel to its axis, which removing most of the field in the perpendicular direction. Thus the unpolarized light incident on the polarizer is converted into linearly polarized light
Linear polarizer
What does a slit act like as far as polarization goes?
Linear polarization
What happens if you place a 90 degree polarizer over an 180 degree polarizer
Cancel each other
How to calculate how much light is transmitted when there are two polarizer present
Law of malus
Ix=Im[cos^2(theta)]
Measured in amplitude
The first polarizer, transmits 100% of light if the polarization axis is aligned with transmission axis
Polarizer
The second polarizer, analyses the plane polarization properties of the light incident on it.
Analyzer
