Partially coherent far-field diffraction in the presence of primary astigmatism

1978 ◽  
Vol 56 (12) ◽  
pp. 1539-1544 ◽  
Author(s):  
A. K. Gupta ◽  
K. Singh
Keyword(s):  
Correlation Function ◽  
Coherence Function ◽  
Far Field ◽  
Circular Aperture ◽  
Fraunhofer Diffraction ◽  
Mutual Coherence ◽  
Peak Intensity ◽  
Coherence Parameter ◽  
Mutual Coherence Function ◽  
Diffraction Patterns

This paper deals with the study of intensity distributions and the encircled energy in the Fraunhofer diffraction patterns formed by an optical system with a circular aperture afflicted with primary astigmatism under partially space coherent illumination. The besinc form of the correlation function has been assumed for the mutual coherence function. Computed results are presented graphically in the midfocal plane to illustrate the degrading effects of various amounts of astigmatism on the image quality for several values of the coherence parameter. Peak intensity as a function of coherence parameter is also plotted.

scholarly journals Fundamental Aspects of Aperture Synthesis with Limited or No Phase Information

1979 ◽  
Vol 49 ◽  
pp. 67-82
Author(s):  
J.E. Baldwin ◽  
P.J. Warner
Keyword(s):  
Coherence Function ◽  
Aperture Synthesis ◽  
Phase Information ◽  
Mutual Coherence ◽  
Interference Fringes ◽  
Mutual Coherence Function

Much ingenuity has been devoted to the determination of mutual coherence functions at radio wavelengths. Measurements of the amplitude and phase of the interference fringes with uncertainties of only 1 percent are now attainable. Unfortunately the atmosphere intervenes between the measured quantities and the mutual coherence function itself and the phase uncertainties introduced by the ionospheric and tropospheric irregularities are often the factor limiting the quality of radioastronomical maps.

On the Mutual Coherence Function in an Inhomogeneous Medium

1962 ◽  
Vol 3 (4) ◽  
pp. 678-684 ◽  
Author(s):  
George B. Parrent ◽  
Robert A. Shore ◽  
Thomas J. Skinner
Keyword(s):  
Inhomogeneous Medium ◽  
Coherence Function ◽  
Mutual Coherence ◽  
Mutual Coherence Function

Stochastic propagation of the mutual coherence function in the deep ocean

1984 ◽  
Vol 75 (5) ◽  
pp. 1407-1414 ◽  
Author(s):  
R. N. Baer ◽  
J. S. Perkins ◽  
E. B. Wright ◽  
J. J. McCoy
Keyword(s):  
Coherence Function ◽  
Deep Ocean ◽  
Mutual Coherence ◽  
Mutual Coherence Function
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