Journal ArticleDOI
Determination of coherence length from speckle contrast on a rough surface
R. Dändliker,F. M. Mottier +1 more
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In this article, the authors used the speckle pattern in the image of a diffusely scattering plane surface illuminated by two mutually inclined quasi plane waves split from a common laser source to check the coherence properties of a light source.Abstract:
The speckle pattern in the image of a diffusely scattering plane surface illuminated by two mutually inclined quasi plane waves split from a common laser source gives a direct display of the coherence properties of that light source. This can be used as a simple device to check the coherence of a laser source for holographic or interferometric work. The speckle contrast is a linear function of the square modulus of the degree of coherence. This relation has been proved experimentally for coherent and for incoherent laser radiation. The main difference of the intensity distributions for coherent and incoherent illumination occurs at low intensities, which have maximum probability in the coherent and minimum probability in the incoherent case. The intensity probability distributions have been determined experimentally for two limiting cases. Within the experimental limitations they show very good agreement with the theoretical predictions.read more
Citations
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Book ChapterDOI
I Heterodyne Holographic Interferometry
TL;DR: Holographic interferometry has some unique properties, which makes it superior to classical interferomet; wavefields from the same object, but under different conditions and at different times, can be compared.
Book ChapterDOI
Speckle Patterns in Partially Coherent Light
TL;DR: In this paper, the effects of light of arbitrary coherence may be considered, and the results derived in that section are the only new results presented here; the rest of the material is taken from published work, much of which has been reported during the last five years.
Journal ArticleDOI
Determination of coherence length in biological tissues.
TL;DR: This work has experimentally validated the conditions affecting the spatial coherence of a laser illumination going through a biological tissue and concludes that lasers have no preference over diodes once penetrating biological tissues.
Journal ArticleDOI
Detection of movement with laser speckle patterns: statistical properties
TL;DR: In this paper, an optical method for detection of in-plane movement of a diffusing object is presented, based on spatial filtering of the laser speckle pattern, which is produced by illumination of the object with coherent light.
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
Introduction to Fourier Optics
Joseph W. Goodman,Mary E. Cox +1 more
TL;DR: The second edition of this respected text considerably expands the original and reflects the tremendous advances made in the discipline since 1968 as discussed by the authors, with a special emphasis on applications to diffraction, imaging, optical data processing, and holography.
Book
Introduction to Fourier optics
TL;DR: The second edition of this respected text considerably expands the original and reflects the tremendous advances made in the discipline since 1968 as discussed by the authors, with a special emphasis on applications to diffraction, imaging, optical data processing, and holography.
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O. M. Vokhnik,V. I. Odintsov +1 more