A5104470222- Photonic and Optical Devices
- Semiconductor Lasers and Optical Devices
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Optical and Acousto-Optic Technologies
- Photorefractive and Nonlinear Optics
- Phase-change materials and chalcogenides
- Optical Coatings and Gratings
- Plasma Diagnostics and Applications
- Superconducting Materials and Applications
- Laser Design and Applications
- Magnetic confinement fusion research
- Gyrotron and Vacuum Electronics Research
- Photonic Crystals and Applications
- Nuclear Physics and Applications
- Advanced Photonic Communication Systems
- Radiation Therapy and Dosimetry
- Vacuum and Plasma Arcs
- Semiconductor Quantum Structures and Devices
- Laser-induced spectroscopy and plasma
- Advanced Fiber Laser Technologies
- Solid-state spectroscopy and crystallography
- Advanced Fiber Optic Sensors
- Optical Network Technologies
- Pulsed Power Technology Applications
Joint Institute for Nuclear Research
2014-2024
D.V.Efremov Institute of Electrophysical Apparatus (Russia)
2003
State Optical Institute named after SI Vavilov
1997
Institute of Engineering Physics
1981
This review deals with applications of glassy chalcogenide semiconductors in fiber and integrated optics. The physicochemical properties glasses are discussed detail. It is shown that they promising materials for fiber-optic communication lines operating the near infrared particularly middle range. problems using optical memory effect some integrated-optics components, fibers, waveguide holograms considered. strength components made also discussed.
An investigation was made of functional integrated optics elements based on volume-phase holographic gratings in thin-film optical waveguides. The waveguides were films arsenic trisulfide. Sinusoidal phase formed the bulk a waveguide and their function reflection conversion surface waves. A reflecting grating filter with band half-width ~2.5 Å maximum coefficient 0.9 made. calculated parameters structures satisfactory agreement experimental data.
Computer codes suitable for the study of beam dynamics in cyclotronlike (classical and isochronous cyclotrons, synchrocyclotrons, fixed field alternating gradient) accelerators are reviewed. modeling cyclotron segments, such as central zone, acceleration region, extraction system is considered. The author does not claim to give a full detailed description methods algorithms used codes. Special attention paid already proven confirmed at existing accelerating facilities. programs prepared...
The driver linac for the facility rare isotope beams (FRIB) will provide a wide range of primary ion nuclear physics research. be capable accelerating uranium beam to an energy up 200 Mev/u and delivering it fragmentation target with maximum power 400 kW. Stable produced by high performance electron cyclotron resonance source operating at 28 GHz. located on voltage platform reach initial 12 keV/u. After extraction, transported vertically down tunnel in low transport (LEBT) system injected...
An investigation was made of the influence spiking on spectral characteristics injection-laser diodes. The carried out single and double GaAs diodes operating at 90°K. It found that emission spectrum obtained in non-spiking case consisted one or two longitudinal modes. Spiking characterized by a modulation depth about 50% increased number modes to three four. appearance spikes with greater gave rise five eight axial This behavior semiconductor lasers attributed excitation spikes.
It is shown that conventional semiconductor lasers can be used for the retrieval of binary data from holograms in which stored density ~104 bits/mm2.
An analysis is made of the basic principles and methods construction integrated optical circuits (IOC) for data processing, which are waveguide processors in form. A classification provided IOC accordance with nature input connections to components their intended function. current status research development analog handling digital signals, computing technology, switching IOC. detailed different functions processing: spectrum analyzers correlators, analog-digital converters, identification...
A review is given of the literature on principles compatibility and matching methods suitable for integrated-optics devices fiber-optic communication lines. The general fiber other waveguides are given. detailed analysis made main coupling methods, including direct excitation end face optical tunneling method. Devices single-mode multimode to various types discussed comprehensively. Methods planar three-dimensional considered as well corresponding radiation sources (semiconductor lasers...
A review is given of the literature on interaction and conversion surface waves in integrated-optics elements with distributed coupling. general description coupling thin-film waveguides a detailed investigation made their periodically modulated parameters. The different types periodic modulation parameters are discussed compared. main devices systems based diffraction-grating structures examined. possibility using "aperiodic" grating integrated optics demonstrated tunnel considered.
An investigation was made of liquid waveguide modulators utilizing crystals and nitrobenzene. A 50% depth amplitude modulation achieved for He-Ne laser radiation (0.63 μ) by applying a voltage about 100 V at frequency 50 kHz to liquid-crystal thin-film waveguides based on the orientation absorption. Polarization emitted an injection in nitrobenzene waveguide; this case 90% when 60 its order 1–2 MHz.
The emission frequency of a continuous-wave GaAs laser was modulated by varying the injection current. dependence efficiency modulation (the ratio amplitude oscillations to current oscillations) investigated new method. It found that this decreased factor 30 when increased from 5 200 kHz. experimental results were in agreement with calculation temperature and thermal conditions laser.