Journal ArticleDOI
Measurement of Spatial Coherence Using Speckle Patterns
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TLDR
In this paper, a method for measuring the spatial coherence of light by means of speckle patterns produced by using ground glass as a random inhomogeneous medium is described, and its verification is performed experimentally by using a laser and a mercury lamp as light sources.Abstract:
A method is described for measuring the spatial coherence of light by means of speckle patterns produced by using ground glass as a random inhomogeneous medium. The theory of the method is developed and its verification is performed experimentally by using a laser and a mercury lamp as light sources. Characteristics of the present method for exploring the spatial coherence of light fields are discussed.read more
Citations
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Book ChapterDOI
I The Statistics of Speckle Patterns
TL;DR: The statistical properties of a speckle pattern depend, in general, on both the coherence of the incident light and the statistics of the scattering surface or medium as discussed by the authors, and it was found that the value of the r.m.s. height variation of a scattering surface strongly influenced the statistical properties, even for surfaces with a Gaussian distribution of surface heights.
Journal ArticleDOI
Effect of surface roughness on the statistical distribution of image speckle intensity
Hitoshi Fujii,T. Asakura +1 more
TL;DR: In this article, an experimental investigation is made of the effect of surface roughness on the statistical distribution of image speckle intensity, which is formed by spatially coherent light at the image plane of an object having some roughness and its statistical properties are investigated.
Journal ArticleDOI
Space and wavelength dependence of speckle intensity
Nicholas George,Atul Jain +1 more
TL;DR: In this article, a unified analysis for the spatial and spectral sensitivity of speckle in a space-invariant linear system is presented, where a diffuse object, illuminated by a collimated, monochromatic beam, is imaged by a system whose amplitude impulse response isz(x, η), wherex and η are space and normalized (temporal) frequency coordinates, respectively.
Journal Article
The concept of degree of coherence and its application to optical problems
TL;DR: In this article, the maximum visibility of the interferences obtainable from two points in a wave field is defined as their degree of coherence γ, which depends only on the aperture of the illuminating cone.
Book ChapterDOI
Stellar Speckle Interferometry
TL;DR: Stellar speckle interferometry is a technique for obtaining diffraction-limited resolution of stellar objects despite the presence of the turbulent atmosphere which limits the resolution of conventional long-exposure pictures to approximately one arc second as mentioned in this paper.
References
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Book
Principles of Optics
TL;DR: In this paper, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Principles of Optics
TL;DR: In this article, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Journal ArticleDOI
The concept of degree of coherence and its application to optical problems
TL;DR: In this article, the maximum visibility of the interferences obtainable from two points in a wave field is defined as their degree of coherence γ, which depends only on the aperture of the illuminating cone.
Journal ArticleDOI
Autocorrelation Function and Power Spectral Density of Laser-Produced Speckle Patterns
TL;DR: In this paper, the autocorrelation function of the speckle pattern so recorded is shown to be proportional to the diffraction pattern corresponding to the illumination function plus a constant.
Journal ArticleDOI
Two-Beam Interference with Partially Coherent Light
B. J. Thompson,Emil Wolf +1 more
TL;DR: In this paper, a new proof of the general interference law for partially coherent fields is obtained and is illustrated by simple and direct experiments, which show the changes in the visibility of the fringes as the degree of coherence varied and the results are compared with the predictions of the theory.
Related Papers (5)
Some Statistical Properties of Random Speckle Patterns in Coherent and Partially Coherent Illumination
A contrast variation of image speckle intensity under illumination of partially coherent light
Hitoshi Fujii,T. Asakura +1 more