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- Polish Physicist, born in present Belarus. Specialist in holography, holographic microscopy, coherent noise suppress... morePolish Physicist, born in present Belarus. Specialist in holography, holographic microscopy, coherent noise suppression, diffraction gratings production, and spectroscopy.Author or co-author around 100 published papers and inventor or co-invertor about 40 patents.edit
ABSTRACT
Research Interests:
By considering a single, diffraction limited spot as a single bit of information and taking into account that the diffraction limited spot in Fourier domain is equivalent to a plane wave, it has been shown that maximal bit capacity N of a... more
By considering a single, diffraction limited spot as a single bit of information and taking into account that the diffraction limited spot in Fourier domain is equivalent to a plane wave, it has been shown that maximal bit capacity N of a hologram is proportional to its overall surface S (not to its volume) and is given by the formula N = S / [2π(κλ)2]. κ is a coefficient defining a required distance between spots (κ = 0.61 if the Rayleigh criterion for resolution of two spots is applied), λ is the wavelength of the light used, and S is the total surface of the hologram (both sides of flat element). For coherent imaging the coefficient k should be increased at least three times, resulting in a decrease of capacity by one order of magnitude. This leads to the conclusion that the limit capacity of a volume hologram of a radius r is only twice the capacity of a flat hologram of the same radius. Thus, increasing the hologram thickness beyond that securing required efficiency, does not deliver any practical gain in information capacity.
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ABSTRACT
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ABSTRACT
Research Interests: Engineering, Physics, Optics, Medical Imaging, Optical Spectroscopy, and 13 moreImage Quality, Holography, Photodetectors, Microscope, Imaging spectroscopy, Diffraction Gratings, Spatial resolution, Spectral Imaging, Spectrometers, Diffraction Grating, Spectral Resolution, High performance spectroscopy, and Spectrometer
ABSTRACT
Research Interests:
ABSTRACT
Research Interests:
Holographic microinterferometer with the noise suppression is presented. The noise suppression method proposed consists of synchronous deflection of both beams. The method is applied on every step of the holographic process as well as... more
Holographic microinterferometer with the noise suppression is presented. The noise suppression method proposed consists of synchronous deflection of both beams. The method is applied on every step of the holographic process as well as during holographic interferometric investigations. A significant increase in image quality was achieved in conjunction with a parallel increase in resolution. It has been experimentally demonstrated, that the applied method can suppress the coherent noise by at least one order of magnitude, depending on the initial noise level. For the case of a high initial noise level the improvement is greater than 2 orders of magnitude.
Research Interests: Mechanical Engineering, Microbiology, Optics, Medical Imaging, Fiber Optics, and 15 moreMicroscopy, Photonics, Cell Biology, Holographic Interferometry, Medicine, Interferometry, Noise, Holography, Optical, Light, Applied Optics, Optical physics, Electrical And Electronic Engineering, Ameba Movement Mechanisms, and Electronic Speckle Pattern Interferometry
ABSTRACT
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Research Interests: Mechanical Engineering, Physics, Optics, Medical Imaging, Fiber Optics, and 13 moreTelecommunications, Photonics, Vibration, Holographic Interferometry, Medicine, Society, Holography, Optical, Light, Applied Optics, Optical physics, Electrical And Electronic Engineering, and Electronic Speckle Pattern Interferometry
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ABSTRACT
Research Interests:
Research Interests:
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ABSTRACT
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Due to increasing availability of pharmaceuticals from many sources, a need is growing to quickly and efficiently analyze substances in terms of the consistency and accuracy of their chemical composition. Differences in chemical... more
Due to increasing availability of pharmaceuticals from many sources, a need is growing to quickly and efficiently analyze substances in terms of the consistency and accuracy of their chemical composition. Differences in chemical composition occur at very low ...
Research Interests: Engineering, Materials Science, Optics, Chemistry, Spectroscopy, and 14 moreSignal Integrity, Raman Spectroscopy, Raman and IR microscopy, Raman spectroscopy applications, Quality Control, Proceedings, Absorption spectroscopy, Dimensional, High performance, Analytical Method, Chemical Composition, Signal to Noise Ratio, Spectrometer, and Optical Absorption
ABSTRACT
Research Interests:
The knowledge of the particular role in sound formation of the different parts of the human vocal organ and of other parts of the body are of interest for medical applications as well as for prediction of the vocal timbre of students... more
The knowledge of the particular role in sound formation of the different parts of the human vocal organ and of other parts of the body are of interest for medical applications as well as for prediction of the vocal timbre of students studying voice. Investigations on the human vocal organ are complicated by the fact, that there is no direct optical access with the naked eye to this organ and that its functioning is influenced by any contact with an optical instrument. Assuming that the air vibrations in particular resonance cavities as well as the vibrations of bones and tissues will be transferred to the nearest skin areas, it can be expected that investigations of vibrations of the skin surface may give some information on internal parts of the body, here especially on the vocal organ. Thus, the problem of a non-contactive analysis of the function of the human vocal organ could be partially reduced to investigations of the skin vibrations of the frontal part of the neck. The double-pulse holographic interference method was used for such investigations, because of many advantages described in [1,2].
Research Interests:
An improved Brewster angle technique for measurement of the refractive index of transparent materials in the form of thick and geometrically nonuniform layers on a much thicker substrate is presented. The technique's usefulness is... more
An improved Brewster angle technique for measurement of the refractive index of transparent materials in the form of thick and geometrically nonuniform layers on a much thicker substrate is presented. The technique's usefulness is demonstrated in application to the dichromated gelatin layers.
Research Interests:
Research Interests:
By considering a single, diffraction limited spot as a single bit of information and taking into account that the diffraction limited spot in Fourier domain is equivalent to a plane wave, it has been shown that maximal bit capacity N of a... more
By considering a single, diffraction limited spot as a single bit of information and taking into account that the diffraction limited spot in Fourier domain is equivalent to a plane wave, it has been shown that maximal bit capacity N of a hologram is proportional to its overall surface S (not to its volume) and is given by the formula N = S / [2π(κλ)2]. κ is a coefficient defining a required distance between spots (κ = 0.61 if the Rayleigh criterion for resolution of two spots is applied), λ is the wavelength of the light used, and S is the total surface of the hologram (both sides of flat element). For coherent imaging the coefficient k should be increased at least three times, resulting in a decrease of capacity by one order of magnitude. This leads to the conclusion that the limit capacity of a volume hologram of a radius r is only twice the capacity of a flat hologram of the same radius. Thus, increasing the hologram thickness beyond that securing required efficiency, does not d...
Research Interests:
The knowledge of the particular role in sound formation of the different parts of the human vocal organ and of other parts of the body are of interest for medical applications as well as for prediction of the vocal timbre of students... more
The knowledge of the particular role in sound formation of the different parts of the human vocal organ and of other parts of the body are of interest for medical applications as well as for prediction of the vocal timbre of students studying voice. Investigations on the human vocal organ are complicated by the fact, that there is no direct optical access with the naked eye to this organ and that its functioning is influenced by any contact with an optical instrument. Assuming that the air vibrations in particular resonance cavities as well as the vibrations of bones and tissues will be transferred to the nearest skin areas, it can be expected that investigations of vibrations of the skin surface may give some information on internal parts of the body, here especially on the vocal organ. Thus, the problem of a non-contactive analysis of the function of the human vocal organ could be partially reduced to investigations of the skin vibrations of the frontal part of the neck. The double-pulse holographic interference method was used for such investigations, because of many advantages described in [1,2].
Research Interests:
La presente invention est destinee a etre utilisee dans le domaine de la spectroscopie et permet de mesurer des concentrations de substances presentant un interet particulier dans des echantillons de forme et de composition regulieres ou... more
La presente invention est destinee a etre utilisee dans le domaine de la spectroscopie et permet de mesurer des concentrations de substances presentant un interet particulier dans des echantillons de forme et de composition regulieres ou non, y compris dans tissus biologiques et des fluides physiologiques. Cette invention fait appel a une cavite integrante capable de recouvrer la lumiere dispersee d'un echantillon donne et de re-illuminer cet echantillon a l'aide de cette meme lumiere, ce qui a pour effet d'accroitre le potentiel d'absorption de la lumiere et permet ainsi d'obtenir un signal plus puissant afin de mesurer l'absorption de la lumiere. Les echantillons peuvent avoir des dimensions aussi importantes que celles de l'espace interne de la cavite, le volume et la forme de cette derniere etant de preference a peu pres egaux au volume et a la forme de l'echantillon.
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ABSTRACT
Research Interests:
Due to increasing availability of pharmaceuticals from many sources, a need is growing to quickly and efficiently analyze substances in terms of the consistency and accuracy of their chemical composition. Differences in chemical... more
Due to increasing availability of pharmaceuticals from many sources, a need is growing to quickly and efficiently analyze substances in terms of the consistency and accuracy of their chemical composition. Differences in chemical composition occur at very low concentrations, so that highly sensitive analytical methods become crucial. Recent progress in dispersive spectroscopy with the use of 2-dimensional detector arrays, permits
Research Interests:
L'invention concerne un dispositif compact (10) destine a surveiller, de maniere non insertive, les niveaux des constituants sanguins, dont le glucose, le cholesterol, l'alcool, les gaz sanguins et divers ions. Le dispositif... more
L'invention concerne un dispositif compact (10) destine a surveiller, de maniere non insertive, les niveaux des constituants sanguins, dont le glucose, le cholesterol, l'alcool, les gaz sanguins et divers ions. Le dispositif comporte un logement pour doigts (140) dote d'un canal destine a recevoir le doigt d'un utilisateur. Le canal comporte une entree de lumiere et une sortie de lumiere de facon que la lumiere puisse etre acheminee d'une source lumineuse (91), a travers un doigt situe dans le canal, dans une direction relativement normale pour le doigt. Certains composants generateurs de chaleur, dont une alimentation stable du dispositif, sont exterieurs au boitier du dispositif de facon a reduire la generation de chaleur, et a ainsi augmenter la stabilite du dispositif. Ce dernier comprend une interface de communication, permettant une interaction avec un ordinateur. Le dispositif peut etre utilise a des fins cliniques ou domestiques, et la memoire de l'or...
Research Interests:
Research Interests:
An improved Brewster angle technique for measurement of the refractive index of transparent materials in the form of thick and geometrically nonuniform layers on a much thicker substrate is presented. The technique's usefulness is... more
An improved Brewster angle technique for measurement of the refractive index of transparent materials in the form of thick and geometrically nonuniform layers on a much thicker substrate is presented. The technique's usefulness is demonstrated in application to the dichromated gelatin layers.