Results 251 to 260 of about 161,238 (304)
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Journal of the Optical Society of America A, 2008
This paper extends the investigation of zone plates to the temporal case. By exploiting the space-time duality between the paraxial diffraction of beams in space and the linear dispersion of optical pulses, we present the time-domain analog of a multiple imaging system.
Maria Teresa, Flores-Arias +4 more
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This paper extends the investigation of zone plates to the temporal case. By exploiting the space-time duality between the paraxial diffraction of beams in space and the linear dispersion of optical pulses, we present the time-domain analog of a multiple imaging system.
Maria Teresa, Flores-Arias +4 more
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Quarterly Reviews of Biophysics, 1980
The scope of this article is to describe a transmission X-ray microscope, possible biological applications of soft X-ray microscopy and preliminary results.For soft X-ray microscopy of biological specimens the wavelength range of 1–10 nm is best suited.
G, Schmahl +3 more
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The scope of this article is to describe a transmission X-ray microscope, possible biological applications of soft X-ray microscopy and preliminary results.For soft X-ray microscopy of biological specimens the wavelength range of 1–10 nm is best suited.
G, Schmahl +3 more
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Computer-Drawn Modulated Zone Plates
Applied Optics, 1973The structure of Fresnel zone plates is considered as a binary carrier of complex modulation functions. Due to the Fourier-transforming roperties of this particular carrier, any original object can be reconstructed with a simple monochromatic point source using no additional optics.
A, Engel, G, Herziger
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Elliptical and hyperbolic zone plates
Applied Optics, 1980Elliptical and hyperbolic zone plates have been constructed by optical methods recording on a photosensitive material the model produced by coherent superposition of two wave fronts, one spherical and the other cylindrical. When the foci of the wave fronts coincide, we have linear zone plates.
C, Gomez-Reino +2 more
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Dielectrophoretically controlled Fresnel zone plate
Lab on a Chip, 2015We present a novel switchable Fresnel zone plate, created using nanoparticle suspensions which are controlled by dielectrophoresis.
A F, Chrimes +4 more
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Single-focus spiral zone plates
Optics Letters, 2017We extend the concept of spiral zone plates along the optical axis and define a specific single optical element, termed as single-focus spiral zone plates (SFSZPs), for the generation of a single-focus vortex beam. The key idea is to make the transmittance of the spiral zone plates sinusoidal in the azimuthal direction.
Yonghao, Liang +4 more
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Zone Plates Produced Optically
Applied Optics, 1969The nature of optically produced zone plates is briefly discussed in contrast to the conventional type of Fresnel zone plate. A rather simple method for generating zone plates is described, and some of the experimental results are given.
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Journal of Modern Optics, 1988
Abstract Interferometry gives a precise indication of the relative separation of two coherent sources. If the sources are images produced by an optical system, their positions are controlled by the respective components of the system. Interferometry can therefore be used to measure the relative positions, in three-dimensions, of the optical components.
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Abstract Interferometry gives a precise indication of the relative separation of two coherent sources. If the sources are images produced by an optical system, their positions are controlled by the respective components of the system. Interferometry can therefore be used to measure the relative positions, in three-dimensions, of the optical components.
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Optically produced linear zone plates
Applied Optics, 1979Linear zone plates (LZP) have been constructed using optical methods both in amplitude and in phase. The results obtained confirm that focal distances follow the relation f/n, and the focal number and its diffraction efficiencies increase by transforming a LZP from amplitude to phase.
C, Gomez-Reino +2 more
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Supplementary Zones-surrounded Fresnel Zone Plate
JSAP-OSA Joint Symposia 2014 Abstracts, 2014The supplementary zones surround an ordinary Fresnel Zone Plate (FZP) are used to improve the optical resolution at focus. Based on the Fresnel-Kirchhoff diffraction formula, an optimization model is used to design the supplementary zones-included FZP (SZFZP).
Yen-Min Lee +8 more
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