The Significance of Image Reversal in the Detection of Hidden Diffractors by Interferometry

Glass, A.S.

doi:10.1080/713820901

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…The Gaussian envelope of width to = 2a/1vI is a wellknown' 8 property of dynamic speckle-intensity correlation measurements. It may be understood in a somewhat elementary way as the time taken for a speckle in the far field to evolve into an essentially new speckle with no memory of its previous configuration.…”

Section: Physical Origins Of the Modulation And Coherence Peaksmentioning

confidence: 99%

Detection of gratings hidden by diffusers using intensity interferometry

Newman

Dainty

1984

J. Opt. Soc. Am. A

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Photon-correlation experiments have verified the theoretical prediction of Baltes et al. [Opt. Acta 28, 11-28 (1981)] that a phase grating hidden within a diffuse medium may be detected by correlation measurements. By extension of this theory to the space-time domain we have additionally verified that a simple and more reliable method of detecting the grating, valid for arbitrarily fine diffusers, is possible by temporal autocorrelation measurements of the scattered field at a single point. This method is shown to yield detailed information about the deterministic and stochastic features of the source and the source plane motion.

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Section: Physical Origins Of the Modulation And Coherence Peaksmentioning

confidence: 99%

Detection of gratings hidden by diffusers using intensity interferometry

Newman

Dainty

1984

J. Opt. Soc. Am. A

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Scattering of Light by a Periodic Structure in the Presence of Randomness. III. Limit of the Extended Matched Filtering Method for the Detection of Weak Periodicities

Vani¹,

Chatterjee²

2004

Appl. Opt.

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It is known that, for scattering of light by a rough grating, the periodically occurring intensity maxima that are characteristic of the periodic part of the scattering medium get smeared off and hence become undetectable if coherence length r0 of the randomness is much smaller than wavelength A of the periodic part of the grating. It is also known that by conventional intensity measurements the detectability region is r0/lambda > or = 0.33, which can be extended to lower regions by intensity interferometry. It is established here that an extended matched filtering method enables one to detect the periodic part of the medium, even in the presence of higher roughness (i.e., lower r0), and the limit is placed at r0/lambda approximately 0.11 by our numerical experiments.

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Coherent and incoherent grating reconstruction

Baltes

Huiser

1986

J. Opt. Soc. Am. A

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The Significance of Image Reversal in the Detection of Hidden Diffractors by Interferometry

Cited by 5 publications

References 6 publications

Detection of gratings hidden by diffusers using intensity interferometry

Detection of gratings hidden by diffusers using intensity interferometry

Scattering of Light by a Periodic Structure in the Presence of Randomness. III. Limit of the Extended Matched Filtering Method for the Detection of Weak Periodicities

Coherent and incoherent grating reconstruction

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