Results 81 to 90 of about 129 (117)
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Talbot interferometer with simultaneous dark and bright fields
Applied Optics, 1989We describe an optical setup for implementing a Talbot interferometer that uses two mutually incoherent sets of self-images to simultaneously produce interference bands due to dark and bright fields. A spatial filter can be used to visualize these fields without interference fringes. Experimental results are included.
E, Tepichin, J, Ojeda-Castaneda
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Lateral aberration measurements with a digital Talbot interferometer
Applied Optics, 1984A new technique for computer-based Talbot interferometry is presented. Fast and automatic aberration measurement has been achieved with improved accuracy and sensitivity. Experimental results are given that agree with the results of calculation by ray tracing.
M, Takeda, S, Kobayashi
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Calibration of Foci-Meter Based on Talbot-Moiré Interferometer
Laser and Optoelectronics Progress, 2014赵琦 Zhao Qi +8 more
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Talbot interferometer based on a birefringence grating
Optics Communications, 2000Abstract A 1-D coarse grating imaged onto a photorefractive Bi12SiO20 crystal is stored as modulation of birefringence. On this basis, the self-imaging phenomenon is implemented. When an analyzer is placed at the output of the crystal, the modulation of birefringence is converted into a modulation of transmission. In this case in the read-out process,
Myrian Tebaldi +2 more
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Interferometer based on the Talbot effect in holography
Journal of Optics, 1995This paper discloses an interferometer based on the Talbot effect in holography and combining in itself properties of the Talbot and of the holographic interferometers. The second grating is replaced with the hologram of the first grating in the interferometer proposed, which constitutes its difference from the Talbot interferometer and which results ...
A Maripov, Yu Ismanov
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Temporal impulse response of the Talbot interferometer
Optics Communications, 2007The Talbot interferometer has been shown earlier to act as an optical tapped delay-line in the time domain. The interferometer is based on the self-imaging effect. It consists of two gratings separated by a multiple of the self-imaging distance. Here, we determine its temporal behaviour experimentally.
Hans Knuppertz +2 more
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Electronic talbot interferometer
Optics and Lasers in Engineering, 1981Abstract This paper explains theoretically the principle of the Talbot interferometer using two ‘Fourier images’. The experimental results show that video techniques are more useful for superimposing two ‘Fourier images’ than photographic techniques.
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Simplified Talbot Interferometers for Lens Testing
Optical Engineering, 1976Moire fringes and the Talbot self-imaging effect can be combined to produce shearing-interferometric-like maps of lens refractive power with high sensitivity and accuracy. Here we explore the properties of a simplified interferometer, consisting of a white-light source and two dissimilar gratings, designed to be rugged enough for field testing of ...
Stephen A. Benton, Dwight P. Merrill
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Talbot Interferometer for Radial and Lateral Derivatives
Applied Optics, 1972The theory and experimental evidence of a shearing interferometer based on the Talbot effect are presented. Multiple-shearing interferences are obtained that can be reduced to triple-shearing or doubleshearing interferences by the addition of simple spatial filtering.
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Talbot interferometer with computer generated gratings
Optics Communications, 1983Abstract In a Talbot interferometer the self image of a periodic pattern, such as a Ronchi ruling of period d, illuminated by a monochromatic plane wavefront of wavelength λ, is formed at distances which are integral multiples of 2d2/λ. A refracting object placed in front of the Ronchi ruling distorts the self image.
C.S. Lim, V. Srinivasan
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