A5101715356- Magneto-Optical Properties and Applications
- Solid State Laser Technologies
- Photorefractive and Nonlinear Optics
- Geophysics and Sensor Technology
- Optical and Acousto-Optic Technologies
- Glass properties and applications
- Engineering Technology and Methodologies
- Laser Design and Applications
- Advanced Fiber Laser Technologies
- Light effects on plants
- Photonic Crystals and Applications
- High-pressure geophysics and materials
- Magnetic and Electromagnetic Effects
- Surface Roughness and Optical Measurements
- Metallurgy and Material Forming
- Optical Polarization and Ellipsometry
- Heat Transfer Mechanisms
- Industrial Engineering and Technologies
- Field-Flow Fractionation Techniques
- Atomic and Molecular Physics
- Laser Material Processing Techniques
- Solar-Powered Water Purification Methods
- Ultrasound and Cavitation Phenomena
- Electric Power Systems and Control
- Microwave Dielectric Ceramics Synthesis
Russian Academy of Sciences
2022
Institute of Applied Physics
2015-2022
A.M. Obukhov Institute of Atmospheric Physics
2021
Shell (Japan)
2018
Saint Petersburg State Forest Technical University
2016
Ukrainian Research Institute of Refractories named after A.S. Berezhnoy
1988
Moscow Aviation Institute
1968-1971
The method of self-propagating high-temperature synthesis submicron powders with subsequent vacuum sintering was used to produce a series optical ceramics based on dysprosium oxide (DyxY0.95-xLa0.05)2O3, where x=0.7, 0.85, and 0.9. influence composition transmission the obtained samples investigated. studied materials had several transparency windows in visible 500-730 nm, near-IR 1900-2300 mid-IR 3500-7500 nm ranges. dependence Verdet constant wavelength 400-1940 range measured for each...
The magneto-optical properties of single-crystal silicon were investigated as a function wavelength and temperature. A bulk free-space traditional Faraday isolator for the radiation with 1940 nm (magnetic field ∼2.8 Т) was implemented. negative value piezo-optical anisotropy ratio used material allowed development compensation thermally induced depolarization without reciprocal rotator. potential isolators operating at room well cryogenic temperatures in high-power laser considered. It shown...
Using the original method, based on measurements of thermally induced depolarization, optical anisotropy parameters CaF2, BaF2 and SrF2 cubic crystals were measured compared with what is known from literature. Euler angles crystallographic axis orientation [C], in which depolarization minimal, determined using experimental results for studied fluorides.
Samples of TAG ceramics doped with Ce and Pr ions (0, 0.5, 1, 1.5, 2 at.% concentrations) Ho (0.5 at.%) were studied. The wavelength dependence the Verdet constant each sample in 405 nm - 1064 range was measured, analytical approximation found. obtained value studied did not depend on dopant concentration type concentrations. thermally induced depolarization laser radiation power investigated, magneto optical figure merit estimated for sample. It demonstrated that doping can provide a...
The expressions for the thermal lens of linearly polarized radiation arising in m3m, 432 and 4̅3m cubic crystals with arbitrary crystallographic axes orientation presence circular birefringence δc are analyzed. It is shown that may have astigmatism magnitude which proportional to power heat generation. Euler angles determining [P1 found conditions material constant - optical anisotropy parameter ξ under active magneto-active elements can be eliminated, formulated. demonstrated depends only...
Thermo-optical properties of several <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo stretchy="false">(</mml:mo> <mml:mi mathvariant="normal">T</mml:mi> </mml:mrow> <mml:msub> mathvariant="normal">b</mml:mi> <mml:mn>1</mml:mn> <mml:mo>−</mml:mo> <mml:mi>x</mml:mi> </mml:msub> mathvariant="normal">Y</mml:mi> stretchy="false">)</mml:mo> <mml:mn>2</mml:mn> mathvariant="normal">O</mml:mi> <mml:mn>3</mml:mn> </mml:math> ceramic...
The experimental results presented in this study focused on the of biological processes caused by exposure to coating layers laser green light seed (λ = 532 nm) range for larch, violet 405 and red 640 spruce. Spend a series experiments dependence crop quality (spruce larch from pine family) radiation under different conditions. In all analyzed groups studied germination growth seedlings exposed exposure, compared with control group. showed that higher percentage than seeds
We present a diode-pumped Yb:YLF laser system generating 100-mJ sub-ps pulses at 1-kHz repetition rate (100 W average power) by chirped-pulse amplification. The consists of cryogenically cooled 78 K, regenerative, eight-pass booster amplifier seeded an all-fiber front end. output are compressed to 980 fs in single-grating Treacy compressor with throughput 89%. will be applied multi-cycle THz generation and pumping high power parametric amplifiers.
Currently there is a situation that makes it difficult to provide the population with quality drinking water for sanitary-hygienic requirements. One of urgent problems need disinfection. Since emergence microorganisms are pathogens transmitted through such as typhoid, cholera, etc. requires constant cleansing waters against pathogenic bacteria. In treatment process destroyed up 98% germs, but among remaining can be viruses, destruction which special handling. As result, conducted research...
The spectral and laser properties of 3 at.% Yb3+:Lu3Al5O12 ceramics produced by a new method nanocrystalline pressure-less sintering in H2 were investigated. studied sample had transmittance close to the theoretical value (83.3% at λ = 1070 nm) level lifetime 0.93 ms. Laser generation different regimes with maximum slope efficiency 54% average power 206 W was attained, which makes this highly promising for producing lasers multi-kilowatt power.
Single-crystal silicon is one of the most promising materials for producing test masses new generation laser interferometers intended detection gravitational waves. We studied thermally induced depolarization radiation in single-crystal with [001] orientation at a wavelength 1940 nm room temperature. The value piezo-optical anisotropy ratio was found to be ξ = -0.63 ± 0.05 manufacturer and 0.62 another. physical reason different signs not established, search this will continue. For negative...
The experimental results presented in this study are the early studies of germination on example Picea abies and were aimed at testing seeds development morphology, caused a therapeutic effect laser radiation field stages under action ultraviolet red light spectral range 405 nm 640 nm. A set irradiated various energy doses within same time. analyzed parallel with control group. In all studied growth seedlings. showed that percentage higher than group Samanids recurrence options.
Experimental results presented in this study tends to explore viruses the water for their further decontamination under influence of laser radiation (λ=220-390 nm). Conducted a series experiments dependence quality from effects radiation. Correlation between degree survival and power density. The showed that all analyzed samples is clearing bacteria 98%. Preliminary tests prototype laboratory system UFOVI has opened up new opportunities sterilizing.
We have obtained what we believe to be the shortest fs tuning wavelength (1004 nm) from a Yb-based solid-state laser system. As working horse, chosen Yb:YVO 4 due its blueshifted gain spectrum. While using single 10 W 952 nm diode for pumping and semiconductor saturable absorber mirror (SESAM) mode-locking, achieved 266 long pulses with up 1.24 of output power around 1021 nm. Using an intracavity birefringent filter, central could tuned smoothly between 1004–1038 1009–1061 while employing...
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