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Technologies and Technology Equipment
A. S. Moskalenko, A. V. Samvelov, I. V. Libkind, A. V. Lobashov
Coating Technology in the Production of Aperture “Cold” Diaphragms for Photodetectors DOI: 10.22184/1993-7296.FRos.2023.17.1.8.13
The most important optical element of the photodetector (PD) is the aperture “cold” diaphragm that protects the photodetector module against leakage radiation and flares. The article proposes a method to obtain and generate a coating on the aperture “cold” diaphragm surface being a PD component in the medium-wave and long-wave infrared band.
Coating Technology in the Production of Aperture “Cold” Diaphragms for Photodetectors DOI: 10.22184/1993-7296.FRos.2023.17.1.8.13
The most important optical element of the photodetector (PD) is the aperture “cold” diaphragm that protects the photodetector module against leakage radiation and flares. The article proposes a method to obtain and generate a coating on the aperture “cold” diaphragm surface being a PD component in the medium-wave and long-wave infrared band.
Tags: aperture diaphragm chemical coating cooled ir photodetectors grayness degree photodetector (pd) апертурная диафрагма охлаждаемые фотоприемники ик-диапазона степень серости фотоприемное устройство (фпу) химическое покрытие
Additive Technologies
X. A. Egorova, K. A. Rozanov, A. I. Kiian, D. A. Sinev
Features of Additive Laser Processing for the Surface Layer Hardness Increase on Titanium Samples DOI: 10.22184/1993-7296.FRos.2023.17.1.16.24
This article presents the research results on the control of the mechanical and functional titanium parameters by an additive surface laser micro-treatment with an additional graphite layer under the influence of near-IR laser radiation. The results of experimental studies on selection of the optimal laser radiation parameters for increasing the hardness and wear resistance of a model titanium sample are provided. The results demonstrate significantly increased hardness of the treated area (up to 9.3 times) and a decreased abrasive wear resistance rate by about 2 times compared to the original sample.
Features of Additive Laser Processing for the Surface Layer Hardness Increase on Titanium Samples DOI: 10.22184/1993-7296.FRos.2023.17.1.16.24
This article presents the research results on the control of the mechanical and functional titanium parameters by an additive surface laser micro-treatment with an additional graphite layer under the influence of near-IR laser radiation. The results of experimental studies on selection of the optimal laser radiation parameters for increasing the hardness and wear resistance of a model titanium sample are provided. The results demonstrate significantly increased hardness of the treated area (up to 9.3 times) and a decreased abrasive wear resistance rate by about 2 times compared to the original sample.
Tags: hardness increase laser micro-structuring of titanium laser thermochemistry wear resistance enhancement лазерная термохимия лазерное микроструктурирование титана повышение твердости увеличение износостойкости
Opto-electronic systems and complexes
Yu. V. Filatov, A. S. Kukaev, V. Yu. Venediktov, A. A. Sevryugin, E. V. Shalymov
Microoptical Gyros Based on Whispering Gallery Mode Resonators DOI: 10.22184/1993-7296.FRos.2023.17.1.26.44
Optical gyros, such as ring laser gyros and fiber optical gyros, have become a basis for strapdown inertial navigation systems due to a number of advantages (larger dynamic range of the measured velocities; high stability of scale factor, insensitivity to linear acceleration and G-stress; smaller readiness time, etc.). Despite success in its development, ring laser and fiber optic gyros are unsuitable for using in control systems of small portable devices because of its large size and weight. Now the actual task is miniaturization of optical gyros, or development and research of microoptical gyros.
Microoptical Gyros Based on Whispering Gallery Mode Resonators DOI: 10.22184/1993-7296.FRos.2023.17.1.26.44
Optical gyros, such as ring laser gyros and fiber optical gyros, have become a basis for strapdown inertial navigation systems due to a number of advantages (larger dynamic range of the measured velocities; high stability of scale factor, insensitivity to linear acceleration and G-stress; smaller readiness time, etc.). Despite success in its development, ring laser and fiber optic gyros are unsuitable for using in control systems of small portable devices because of its large size and weight. Now the actual task is miniaturization of optical gyros, or development and research of microoptical gyros.
Tags: angular velocity sensor microoptical gyros reciprocal frequency shift whispering gallery mode resonators взаимный сдвиг частоты датчик угловой скорости микрооптические гироскопы резонаторы галереи шепчущих мод
Quantum Technologies
V. M. Petrov, D. A. Koroteev, D. A. Semisalov, V. S. Strashilin, D. S. Khlusevich, M. I. Yakovlev, M. V. Parfenov
Integrated Optical C-NOT Gates: Estimation of the Main Parameters for Practical Design DOI: 10.22184/1993-7296.FRos.2023.17.1.58.70
The influence of deviation of the beam splitter parameters on the operation of a quantum photon gate in an integrated optical version is considered. It is shown that the required accuracy is quite achievable for electro-optical control in the X-splitter geometry. The estimated length of the device demonstrates its possible implementation even on the substrates with a length of 3 inches.
Integrated Optical C-NOT Gates: Estimation of the Main Parameters for Practical Design DOI: 10.22184/1993-7296.FRos.2023.17.1.58.70
The influence of deviation of the beam splitter parameters on the operation of a quantum photon gate in an integrated optical version is considered. It is shown that the required accuracy is quite achievable for electro-optical control in the X-splitter geometry. The estimated length of the device demonstrates its possible implementation even on the substrates with a length of 3 inches.
Tags: c-not gate c-not гейт photonic gates quantum logic gate success probabilities вероятности успешного срабатывания photonic integrated circuits квантовый логический вентиль фотонные гейты фотонные интегральные схемы
Optical Measurements
T. V. Gordeychuk, M. V. Kazachek
Calcium Ionization During Sonoluminescence from CaCl2 Aqueous Solution DOI: 10.22184/1993-7296.FRos.2023.17.1.72.76
The weak lines of CaII at 393 and 397 nm were observed upon 20 kHz insonification of 2M CaCl2 aqueous solution in the multibubble sonoluminescence spectrum. The rough estimation of Ca ionization degree having made by comparison with the solar spectrum that indicates the significant thermodynamic nonequilibrium of processes in a cavitation bubble.
Calcium Ionization During Sonoluminescence from CaCl2 Aqueous Solution DOI: 10.22184/1993-7296.FRos.2023.17.1.72.76
The weak lines of CaII at 393 and 397 nm were observed upon 20 kHz insonification of 2M CaCl2 aqueous solution in the multibubble sonoluminescence spectrum. The rough estimation of Ca ionization degree having made by comparison with the solar spectrum that indicates the significant thermodynamic nonequilibrium of processes in a cavitation bubble.
Tags: cacl2 aqueous solution ca ionization sonoluminescence водный раствор cacl2 ионизация сa сонолюминесценция
Free-Space Optical Communication
M. V. Tarasenkov, S. A. Peshkov, E. S. Poznakharev
Estimated Bit Error Rate in the Atmospheric Optical Communication Channel Based on Scattered Radiation in the UV-wavelength Range in the Daytime and at Night DOI: 10.22184/1993-7296.FRos.2023.17.1.46.56
A model of the atmospheric optical communication channel based on scattered radiation in the UV wavelength range is considered. The model is based on the Monte Carlo method algorithms for the local and modified double local estimate to calculate the impulse response of the optical communication channel. The bit error rate in the day and at night is estimated for the wavelength range from 200 to 400 nm and information coding using the digital pulse interval modulation (DPIM). The results demonstrate that the wavelength λ = 295 nm is better to arrange a long-range communication using the receiving system under study in the daytime, whereas the wavelength λ = 395 nm is better at night.
Estimated Bit Error Rate in the Atmospheric Optical Communication Channel Based on Scattered Radiation in the UV-wavelength Range in the Daytime and at Night DOI: 10.22184/1993-7296.FRos.2023.17.1.46.56
A model of the atmospheric optical communication channel based on scattered radiation in the UV wavelength range is considered. The model is based on the Monte Carlo method algorithms for the local and modified double local estimate to calculate the impulse response of the optical communication channel. The bit error rate in the day and at night is estimated for the wavelength range from 200 to 400 nm and information coding using the digital pulse interval modulation (DPIM). The results demonstrate that the wavelength λ = 295 nm is better to arrange a long-range communication using the receiving system under study in the daytime, whereas the wavelength λ = 395 nm is better at night.