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Kalenkov S.G.,University of Mechanical Engineering | Kalenkov G.S.,Moscow Institute of Physics and Technology | Shtanko A.E.,Moscow State University
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

Novel method is suggested for a hyperspectral wave field holographic recording, based on asymmetrical Fourier spectrometer with a flat microobject placed in one of its arms. The output signal, which is the interference of the reference field with the field diffracted by the object, is registered by CCD. The process of recording is reduced to consecutive registration of two-dimensional interferograms by changing the optical length of the reference arm of the interferometer. One-dimensional Fourier transform of the interferogram in each pixel gives a spatial distribution of the complex amplitude for all spectral components of a hyperspectral object field. Inverse Fresnel transform of this field gives a hyperspectral object field in the object plane. Hyperspectral amplitude and average-phase profile images of standard microscope samples obtained experimentally are presented. Coloring, Fellgett's advantage and speckle noise © 2015 SPIE.


Kalenkov S.G.,University of Mechanical Engineering | Kalenkov G.S.,Moscow Institute of Physics and Technology | Shtanko A.E.,Moscow State University
Optics Express | Year: 2013

We propose a novel method to obtain non-lens holographic images of micro-objects in white light with diffraction limit quality, based on fourier-spectroscopy principles. We developed a simple method for numerical acquisition of digital holograms of micro-objects at any spectral component from the set of two-dimensional interferograms, registered by fourier-spectrometer. In our experiments we used spectrally-spatial holographic fourier-spectrometer (SSHFS), equipped with supercontinuum light source and CCD camera for registration. Holographic images of several test objects acquired experimentally at different spectral components are presented. Visualization of local spatially-spectral inhomogeneities of micro-objects is discussed through the example of silver berry scaly hair sample. © 2013 Optical Society of America.


Lylova A.,University of Mechanical Engineering | Kudryashov A.,Zuev Institute of Atmospheric Optics | Sheldakova J.,Zuev Institute of Atmospheric Optics | Borsoni G.,AKA Optics SAS
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

It is suggested to reconstruct the phase screens with the use of stacked-actuator deformable mirror and to compensate for the introduced distortions by the bimorph mirror. The reproducing and correction results are presented in the paper. The problems of the reconstruction and compensation are discussed. © 2015 SPIE.


Kalenkov G.S.,Moscow Institute of Physics and Technology | Kalenkov S.G.,University of Mechanical Engineering | Shtanko A.E.,Moscow State University
Optics InfoBase Conference Papers | Year: 2014

New lens free holographic image acquisition method in polychromatic, unpolarized light is presented. Hyperspectral amplitude and average-phase profile images of standard microscope samples obtained experimentally are presented, speckle noise reduction is discussed. © 2014 OSA.


Kononov V.M.,University of Mechanical Engineering
Gornyi Zhurnal | Year: 2015

The article describes theoretical and exploratory research and its commercial trial (in Severomuysky tunnel) aimed at explosive charge control in blastholes with preset orientation cuts made in the blasthole walls, that allow concentrating blast energy along the cut orientation and, consequently, reduction in powder factor, "smooth" excavation perimeter after blasting with minimized overrun/underrun and damage of adjacent rock mass (fracturing). The bench testing involved fracturing of various strength concrete blocks by charges placed in blastholes with and without cuts of various orientation, depth and shape; the principle parameters and relations have been determined, including the relation between the blasting energy content reduction coefficient KE and the cut depth and angle for various strength blocks, as well as the powder factor reduction. The pilot blasts carried out at a commercial level, considering the parameters obtained in the tests, proved the efficiency of the new technology.

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