Vladislav Vladimirovich
Vladislav Vladimirovich Druzhin, Moscow RU
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20140160543 | HOLOGRAPHIC IMAGING OPTICAL DEVICE - In relation to a field of creating and processing a digital image, a compact portable device for generation and observation of dynamic and static holograms is provided. A system including a holographic display may be based on reconstruction and transmission of a wavefront encoded with a spatial light modulator while preserving information about a wave amplitude and a phase. Due to such features of the holographic process, an optical device may restore a wavefront similar to a wavefront coming from real objects. | 06-12-2014 |
Vladislav Vladimirovich Dvoirin, Moscow RU
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20090116809 | Amplifying Optical Fiber Operating At A Wavelength In The Range Of 1000-1700 nm, Methods of Fabricating The Same, And Fiber Laser - The invention relates to lasers and fiber optics. An amplifying optical fiber operating at a wavelength in the range of 1000-1700 nm comprises an oxide glass core to provide amplification and at least one oxide glass cladding. According to the invention the core contains oxides of elements selected from the group consisting of silicon, germanium, phosphorus, bismuth, aluminum, gallium at concentration of bismuth oxide of 10-4-5 mol %, concentration of silicon and germanium oxides, taken together or separately, of 70-99.8999 mol %, concentration of aluminum and gallium oxides, taken together or separately, of 0.1-20 mol % concentration of phosphorus oxide from 0 to 10 mol %, and provides a maximum optical gain at least 10 times greater than the nonresonant loss factor in the optical fiber. An outside oxide glass cladding comprises fused silica. The optical fiber core has an absorption band in the 1000 nm region, pumping to which region provides an increased efficiency of power conversion of pump light into luminescence light in the 1000-1700 nm range as compared to pumping to another absorption bands in which pumping brings about luminescence in the 1000-1700 nm range. The optical fiber emits luminescence in the range of 1000-1700 nm when excited by light with wavelengths in the range of 750-12000 nm and a half-height width of the luminescence band of more than 120 nm, and luminescence band boundaries defined as points in which the luminescence intensity drops twice relative to the intensity in the luminescence band maximum lie within the 1000-1700 nm spectral range. | 05-07-2009 |
Vladislav Vladimirovich Dvoyrin, Trondheim NO
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20150288131 | Fiber Amplifier - The present application provides an optical system. The optical system includes a fiber amplifier with an optically active doped fiber, a source of seed pulses, and a pump source. The doped fiber is doped with one or more active element(s) selected such that the seed pulses are amplified in intensity. The doped fiber has a negative (anomalous) group velocity dispersion in the region from the wavelength of the seed pulses to a threshold wavelength at which the magnitude of the optical loss of the doped fiber is greater than a gain due to stimulated Raman scattering. | 10-08-2015 |
Vladislav Vladimirovich Velitsko, Mytischi RU
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20090028739 | RING TURBO-PISTON ENGINE AND RING TURBO-PISTON SUPERCHARGER - The inventive turbo-piston machine is embodied in the form of a turbo-piston expander and/or a turbo-piston supercharger and/or internal combustion engine comprising two mating working members i.e. a rotor and a valve. The rotor is provided with a piston embodied thereon and the valve is provided with a groove. The working members are arranged in the body of the turbo-piston machine, wherein the rotor is placed in at least one cylinder formed by the body walls and, for example, by the sidewalls. The operating process is carried out in at least two working chambers formed by the division of the cylinder space. A working medium is injected into one of the working chambers of the turbo-piston expander and is pumped into the other working chamber. The combination of the turbo-piston supercharger and the turbo-piston expander in one turbo-piston machine makes it possible to develop the internal combustion engines which can operate according to any known cycles, for example according to the Otto, Diesel, Trinkler, Atkinson, Miller, Brayton, Ericsson-Joule, Humphrey, Lenoir, Rankine and Stirling cycles. | 01-29-2009 |