Abstract
We discuss fourth-order correlation properties of wide-sense statistically stationary, quasi-monochromatic, electromagnetic beams, assuming that the fluctuations in the electric field at any point are governed by Gaussian statistics. In particular, we derive expressions for the covariance function and for the contrast (scintillation index) of the fluctuating intensity of an electromagnetic Gaussian Schell-model beam, propagating in free space. For such beams we also derive expressions relating to fluctuations in the power and discuss the effects of transmitter and receiver aperture averaging. We show that the fluctuations of the intensity and of the power of the beam can be controlled by suitable choice of the states of coherence and of polarization of the source.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 30-37 |
| Number of pages | 8 |
| Journal | Journal of Optics A: Pure and Applied Optics |
| Volume | 8 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 2006 |
| Externally published | Yes |
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Keywords
- Contrast
- Electromagnetic beams
- Intensity fluctuations
- Partially coherent beams
- Polarization
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Changes in the intensity fluctuations of a class of random electromagnetic beams on propagation. / Korotkova, Olga.
In: Journal of Optics A: Pure and Applied Optics, Vol. 8, No. 1, 01.01.2006, p. 30-37.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Changes in the intensity fluctuations of a class of random electromagnetic beams on propagation
AU - Korotkova, Olga
PY - 2006/1/1
Y1 - 2006/1/1
N2 - We discuss fourth-order correlation properties of wide-sense statistically stationary, quasi-monochromatic, electromagnetic beams, assuming that the fluctuations in the electric field at any point are governed by Gaussian statistics. In particular, we derive expressions for the covariance function and for the contrast (scintillation index) of the fluctuating intensity of an electromagnetic Gaussian Schell-model beam, propagating in free space. For such beams we also derive expressions relating to fluctuations in the power and discuss the effects of transmitter and receiver aperture averaging. We show that the fluctuations of the intensity and of the power of the beam can be controlled by suitable choice of the states of coherence and of polarization of the source.
AB - We discuss fourth-order correlation properties of wide-sense statistically stationary, quasi-monochromatic, electromagnetic beams, assuming that the fluctuations in the electric field at any point are governed by Gaussian statistics. In particular, we derive expressions for the covariance function and for the contrast (scintillation index) of the fluctuating intensity of an electromagnetic Gaussian Schell-model beam, propagating in free space. For such beams we also derive expressions relating to fluctuations in the power and discuss the effects of transmitter and receiver aperture averaging. We show that the fluctuations of the intensity and of the power of the beam can be controlled by suitable choice of the states of coherence and of polarization of the source.
KW - Contrast
KW - Electromagnetic beams
KW - Intensity fluctuations
KW - Partially coherent beams
KW - Polarization
UR - http://www.scopus.com/inward/record.url?scp=29244476535&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=29244476535&partnerID=8YFLogxK
U2 - 10.1088/1464-4258/8/1/005
DO - 10.1088/1464-4258/8/1/005
M3 - Article
AN - SCOPUS:29244476535
VL - 8
SP - 30
EP - 37
JO - Journal of Optics (United Kingdom)
JF - Journal of Optics (United Kingdom)
SN - 2040-8978
IS - 1
ER -