Journal Article10.1016/S0030-4018(01)01695-9
Moiré beating digital technique to collimation testing
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TL;DR: In this article, a digital collimation technique based on the self-imaging phenomenon is proposed, where a moire pattern is observed by viewing the Fresnel image of an original selfimaged grating through a second grating.
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About: This article is published in Optics Communications. The article was published on 15 Jan 2002. The article focuses on the topics: Grating & Talbot effect.
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Citations
Automated collimation testing using a temporal phase shifting technique in Talbot interferometry.
TL;DR: For detection of collimation position of the collimator, a temporal phase shifting technique has been incorporated into Talbot interferometry and offers high precision, accuracy, and automated output.
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Collimation testing using a circular Dammann grating
Shuai Zhao,Po Sheun Chung +1 more
TL;DR: In this article, a novel technique for collimation testing with a circular Dammann grating is proposed, where double-humped radial rings are generated at the back focal plane of a focusing lens.
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Collimation testing and calibration using a heterodyne Moiré method
TL;DR: In this paper, the phase slope along the direction perpendicular to the grating lines can be estimated and then used to judge the degree of collimation, by measuring only two phase slopes at two positions of the collimating lens, the calibration of the light beam collimation can also be achieved.
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Collimation testing using coherent gradient sensing
Jitendra Dhanotia,Shashi Prakash +1 more
TL;DR: In this paper, an application of coherent gradient sensing (CGS) for collimation testing of an optical beam has been proposed, where a set of two identical linear Ronchi gratings is introduced.
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Setting sensitivity in collimation testing using Lau interferometry
TL;DR: In this article, an improved method for testing the collimation of an incoherent optical beam using Lau interferometry is presented, which consists of a white light source and a set of three identical gratings.
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References
The use of a single plane parallel plate as a lateral shearing interferometer with a visible gas laser source.
TL;DR: In this paper, a high-intensity interference pattern was obtained in a shearing interferometer with the use of a visible gas laser and a simple construction, where the high intensity of the laser per unit of solid angle gave an interference pattern that is visible in room light.
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Collimation test by double grating shearing interferometer
TL;DR: The double grating shearing interferometry method for determination of the degree of light collimation is described, representing a very strong argument proving the highly diffractive (wave optics) character of the classical Ronchi test.
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Focusing Errors in a Collimating Lens or Mirror: Use of a Moiré Technique
Jean Claude Fouéré,D. Malacara +1 more
TL;DR: The Fresnel diffraction pattern of a grating periodically gives an exact reproduction of the grating that depends upon the degree of parallelism of the incident beam, and the possibility of using this technique for studying the focusing errors in a collimating lens or a mirror is presented.
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Collimation method using fourier imaging and moire techniques
TL;DR: In this paper, two techniques are proposed for beam collimation with the Talbot interferometer, the mismatch method and the grating shift method, where two gratings with slightly different periods are used.
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