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Part V
Part V

... the light source. Random (incoherent) light sources, such as stars and light bulbs, emit photons with random arrival times and a Bose-Einstein distribution. Laser (coherent) light sources, on the other hand, have a more uniform (but still random) ...
02_ECEN
02_ECEN

... For use in optical modeling, plane waves have several important characteristics: 1. Plane waves have a constant amplitude (A) over all space and time – the only thing that changes with time and position is the phase. Hence plane waves are trivially easy to “propagate” – just make the appropriate pha ...
Section 8.2 and 8.3 HW
Section 8.2 and 8.3 HW

PPT
PPT

The Michelson Interferometer
The Michelson Interferometer

The Michelson Interferometer
The Michelson Interferometer

... between two beams of light. A diagram of the apparatus is shown in Fig. 1. The basic operation of the interferometer is as follows. Light from a light source is split into two parts. One part of the light travels a different path length than the other. After traversing these different path lengths, ...
Ch 16 Wave Motion
Ch 16 Wave Motion

Waves - SFP Online!
Waves - SFP Online!

Light waves, radio waves and photons
Light waves, radio waves and photons

... Thus the total energy and relative phase of two interfering light beams may be measured with the precision allowed by classical wave physics, and any experiment which measures these variables, such as an interference or correlation experiment, will give the results predicted by classical theory. Hei ...
Review PH301 -- duality, wavefunction, probability
Review PH301 -- duality, wavefunction, probability

PPT
PPT

... fraction of the initial intensity emerges from the system? What is the polarization of the exiting light? • Through the first polarizer: unpolarized to polarized, so I1=½I0. • Into the second polarizer, the light is now vertically polarized. Then, I2 = I1cos260o = 1/4 I1 = 1/8 I0. • Now the light is ...
2-slit experiments with bullets (classical particles)
2-slit experiments with bullets (classical particles)

Chapter 2 (Particle Properties of Waves)
Chapter 2 (Particle Properties of Waves)

... The spatial coordinate of any point of constant phase travels in the +x direction when /k is positive, and in the -x direction when /k is negative. In other words, waves travel to the right when /k is positive, and to the left when /k is negative. Thus, the signs of  and k tell the direction of ...
Supplementary Figure 1
Supplementary Figure 1

Session 26 - Iowa State University
Session 26 - Iowa State University

Mott insulators, Noise correlations and Coherent Spin Dynamics in Optical Lattices
Mott insulators, Noise correlations and Coherent Spin Dynamics in Optical Lattices

Title: Real Fringes in the Michelson Interferometer
Title: Real Fringes in the Michelson Interferometer

... Abstract: Real fringes may be observed through the Michelson Interferometer. The use of fringes is important to understand since they may be used to measure wavelength, very fine measurements, and the study of spectral lines. Although virtual fringes are used for most measurements, it is important ...
PHYSICS 100
PHYSICS 100

Waves, part 9 - UCSD Department of Physics
Waves, part 9 - UCSD Department of Physics

Ch33 - Siena College
Ch33 - Siena College

3. The nature of light 3.1 Light as a wave
3. The nature of light 3.1 Light as a wave

PHYS-2100 Introduction to Methods of Theoretical Physics Fall 1998 1) 2)
PHYS-2100 Introduction to Methods of Theoretical Physics Fall 1998 1) 2)

Final Revision
Final Revision

Let There Be Light
Let There Be Light

Let There Be Light
Let There Be Light

... C) The existence of electromagnetic waves was predicted by Maxwell. D) Electromagnetic waves can propagate through a material substance. E) Electromagnetic waves do not require a physical medium for propagation. ...
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Coherence (physics)

In physics, two wave sources are perfectly coherent if they have a constant phase difference and the same frequency. It is an ideal property of waves that enables stationary (i.e. temporally and spatially constant) interference. It contains several distinct concepts, which are limiting cases that never quite occur in reality but allow an understanding of the physics of waves, and has become a very important concept in quantum physics. More generally, coherence describes all properties of the correlation between physical quantities of a single wave, or between several waves or wave packets. Interference is nothing more than the addition, in the mathematical sense, of wave functions. A single wave can interfere with itself, but this is still an addition of two waves (see Young's slits experiment). Constructive or destructive interferences are limit cases, and two waves always interfere, even if the result of the addition is complicated or not remarkable.When interfering, two waves can add together to create a wave of greater amplitude than either one (constructive interference) or subtract from each other to create a wave of lesser amplitude than either one (destructive interference), depending on their relative phase. Two waves are said to be coherent if they have a constant relative phase. The amount of coherence can readily be measured by the interference visibility, which looks at the size of the interference fringes relative to the input waves (as the phase offset is varied); a precise mathematical definition of the degree of coherence is given by means of correlation functions. Spatial coherence describes the correlation (or predictable relationship) between waves at different points in space, either lateral or longitudinal. Temporal coherence describes the correlation between waves observed at different moments in time. Both are observed in the Michelson–Morley experiment and Young's interference experiment. Once the fringes are obtained in the Michelson–Morley experiment, when one of the mirrors is moved away gradually, the time for the beam to travel increases and the fringes become dull and finally are lost, showing temporal coherence. Similarly, if in Young's double slit experiment the space between the two slits is increased, the coherence dies gradually and finally the fringes disappear, showing spatial coherence.
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