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1
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Optica Applicata
EN In recent years a lot of effort was put into testing and improving the idea of a three-beam interferometer known as an optical vortices interferometer (OVI). Devices based on the idea of the OVI allow measuring small rotation angles and small shifts with a superb resolution. Unfortunately, there are[...]
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Metrology and Measurement Systems
EN Optical vortices were intensively studied during the last decade. In the literature there are papers presenting applications of the optical vortices. The regular net of optical vortices generated by the three plane waves interference allows for the new kind of the interferometer - the Optical Vortex[...]
3
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Pomiary Automatyka Kontrola
2011 R. 57, nr 11 1359-1362
PL Przedstawiono pomiar przemieszczeń i sił wewnętrznych w płytach kołowych metodą interferometrii holograficznej. Przedmiotem badań była płyta kołowa utwierdzona na obwodzie. W pomiarach zastosowano jedną z metod holografii optycznej zwaną metodą podwójnej ekspozycji. W wyniku interferencji fali przed[...]
EN The estimation of displacements and internal forces in circular plates with use of holographic interferometry is presented. An object of investigations was a circular plate restrained in the circuit. The double exposure method of optic holography was used for measurements. As a result of interferenc[...]
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Metrology and Measurement Systems
2013 Vol. 20, nr 3 479--490
EN This paper shows the result of work of the Institute of Micromechanics and Photonics at Warsaw University of Technology and the Length and Angle Division of Central Office of Measures (GUM) [1] in building an automatic multiwavelength interferometric system with extended measurement range for calibr[...]
5
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Opto - Electronics Review
EN The aim of this paper is to analyze 2D fringe pattern denoising performed by two chosen methods based on quasi-1D two-arm spin filter and 2D discrete wavelet transform (DWT) signal decomposition and thresholding. The ultimate aim of this comparison is to estimate which algorithm is better suited for[...]
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Opto - Electronics Review
EN In the paper, application of the digital holographic method for full field characterization of the beam generated by microlenses is considered. For this goal, the laboratory setup was designed based on Mach-Zehnder interferometry with the additional reference channel. The beam generated by a microle[...]
7
80%
Metrology and Measurement Systems
EN In recent years a lot of effort has been put into testing and improving the idea of a three-beam interferometer known as Optical Vortex Interferometer (OVI). Devices based on the idea of an OVI allow, among other things, measuring small rotation angles of the wave [1]. In this paper complex statisti[...]
8
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Metrology and Measurement Systems
EN In this paper a new method to the test deformation of the wave-front of the plane wave is presented. In the method Optical Vortex Interferometry is applied. In the OVI a regular lattice of optical vortices is generated by the interference of three plane waves. The wave-front of one wave is deformed [...]
9
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Optica Applicata
EN The optical vortices are point phase dislocations. The point where the phase is undetermined is called a vortex point. The lattice of optical vortices can be generated by the interference of three or more plane waves, but the optical vortex lattice generated by interference of three plane waves is r[...]
10
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Optica Applicata
EN A highly efficient multiple polarized beam interferometer for the generation of hexagonal array is reported. An expression for the intensity distribution is worked out using Jones' calculus and computed pattern is compared with the experimental results. The array pattern could be scanned over large [...]
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Optica Applicata
EN Confocal imaging by a holographic confocal microscope is based on the real-time incoherent holography. Besides the image amplitude, the image phase is inherently reconstructed. In this paper, we demonstrate that the phase image component can be converted into the height map of the specimen surface, [...]
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Optica Applicata
EN Profile measurement of surfaces is of vital importance in today’s industries, such as lens, wafer fabrication, microstructure. The phase-shifting interferometry (PSI) is very useful in optical measurement. The PSI has many advantages including noncontact measurement, high accuracy and high-speed of [...]
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Zeszyty Naukowe Politechniki Białostockiej. Elektryka
1999 Z.15 233-243
PL Omówiono zasadę działania spektrometru fourierowskiego. Przedstawiono wybra-ne konstrukcje i możliwości ich zastosowania do pracy w zakresie widzialnym.
EN There are principles of Fourier spectroscopy described. Some structures and possibilities of application in visible region are presented
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Nukleonika
EN The PF-1000 plasma-focus facility in Warsaw, equipped with Mather-type coaxial electrodes working with a deuterium filling, was modified by the addition of a cathode disk in front of the anode front-plate at a distance of 3 cm. The plasma was diagnosed with temporal resolved interferometry and neutr[...]
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Optica Applicata
EN The phase-shifting technique is the most popular phase-retrieving technique applied in optical testing. Most of the phase retrieval algorithms rely on stability and accuracy of phase steps. A sufficiently exact phase-step calibration is necessary for phase measurements with high accuracy. We introdu[...]
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Optica Applicata
2013 Vol. 43, nr 2 s. 237--246
EN The aim of the present work is the description of a novel interferometric approach to the commonly known Malus law. In this approach we have described an analyzer as an element realizing the interference of two waves being the components of the linearly polarized wave emerging from the polarizer. We[...]
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Nukleonika
EN Pion interferometry (HBT) measurements relative to the reaction plane provide an estimate of the transverse source anisotropy at freeze-out, which probes the system dynamics and evolution duration. Measurements by the STAR Collaboration indicate that the source is extended increasingly out-of-plane [...]
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Optica Applicata
EN In the paper new areas of the fiber-optic Sagnac interferometer applications are discussed and proposed. Because this system detects the absolute rotation, its application is directly designed for detection of the seismic rotation waves which are rotational events existing in the seismic waves. In m[...]
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Optica Applicata
EN The paper deals with the measurement of the radius of curvature of silicon wafer surface. The aim of these measurements was to determine stresses generated during oxidation of silicon wafers. A greater molar volume of SiO2 layer in relation to the substrate material causes changes in the shape of ox[...]
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Nukleonika
EN Abstract Information about the space-time evolution of colliding nuclei can be extracted correlating particles emitted from nuclear collisions. The high density of particles produced in the STAR experiment allows the measurement of non-identical strange particle correlations. Due to the absence of C[...]
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