Generators of High-Power Ultrashort Microwave Pulses with a Saturable Absorber in a Feedback Circuit
Sign Up to like & getrecommendations! Published in 2017 at "Radiophysics and Quantum Electronics"
DOI: 10.1007/s11141-017-9728-8
Abstract: We study theoretically the mechanism of the formation of high-power ultrashort microwave pulses, which is based on the effect of passive mode locking in electron generators, whose feedback circuit includes a nonlinear saturable absorber (amplitude… read more here.
Keywords: power ultrashort; high power; ultrashort; power ... See more keywords
Quantum optomechanical transducer with ultrashort pulses
Sign Up to like & getrecommendations! Published in 2018 at "New Journal of Physics"
DOI: 10.1088/1367-2630/aadbb7
Abstract: We propose an optomechanical setup allowing quantum mechanical correlation, entanglement and steering of two ultrashort optical pulses. The protocol exploits an indirect interaction between the pulses mediated optomechanically by letting both interact twice with a… read more here.
Keywords: ultrashort pulses; ultrashort; optomechanical transducer; transducer ultrashort ... See more keywords
Quasi-Periodic Sequences Generation of Ultrashort Pulses Based on the Superradiance of a Coaxial Cherenkov Generator Operating at Low Magnetic Field
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Transactions on Electron Devices"
DOI: 10.1109/ted.2025.3559491
Abstract: A coaxial Cherenkov generator operating at a low magnetic field is proposed to generate ultrashort-pulse quasi-periodic sequences based on the effect of superradiance (SR). The device employs an extended slow wave structure (SWS) with combined… read more here.
Keywords: ultrashort; quasi periodic; coaxial cherenkov; cherenkov generator ... See more keywords
Peculiarities in Transmission (Reflection) of Ultrashort Resonant Laser Pulses by a Thin Semiconductor Film in the Conditions of Exciton and Biexciton Excitation
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Experimental and Theoretical Physics"
DOI: 10.1134/s1063776118120191
Abstract: We have studied the nonstationary transmission of two ultrashort laser pulses incident on a thin film. The radiation frequency of one of these pulses is in resonance with the two-photon transition from the ground state… read more here.
Keywords: laser pulses; exciton biexciton; ultrashort; film ... See more keywords
Peculiarities of Propagation and Amplification of Ultrashort Terahertz Pulses in Strongly Nonequilibrium Plasma Channels Produced in Air by UV Femtosecond Laser Pulses during Multiquantum Ionization
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Experimental and Theoretical Physics"
DOI: 10.1134/s1063776120040020
Abstract: Abstract The propagation of an ultrashort terahertz (THz) pulse in a nonequilibrium plasma channel produced by a UV femtosecond laser pulse in air is investigated theoretically. The analysis is carried out based on joint solution… read more here.
Keywords: plasma; ultrashort; nonequilibrium plasma; air ... See more keywords
Impact of random birefringence on nonlinear ultrashort pulse propagation in multimode fibers.
Sign Up to like & getrecommendations! Published in 2025 at "Optics express"
DOI: 10.1364/oe.576472
Abstract: Nonlinear pulse propagation in multimode fibers (MMFs) has attracted considerable attention in recent years, owing to its rich spatiotemporal nonlinear dynamics and diverse potential applications. In practical scenarios, random birefringence in MMFs cannot be neglected,… read more here.
Keywords: ultrashort; birefringence; random birefringence; pulse propagation ... See more keywords
Neuroepigenetic Mechanisms of Action of Ultrashort Peptides in Alzheimer’s Disease
Sign Up to like & getrecommendations! Published in 2022 at "International Journal of Molecular Sciences"
DOI: 10.3390/ijms23084259
Abstract: Epigenetic regulation of gene expression is necessary for maintaining higher-order cognitive functions (learning and memory). The current understanding of the role of epigenetics in the mechanism of Alzheimer’s disease (AD) is focused on DNA methylation,… read more here.
Keywords: action ultrashort; ultrashort peptides; alzheimer disease; ultrashort ... See more keywords
Nanofabrication of Bulk Diffraction Nanogratings via Direct Ultrashort-Pulse Laser Micro-Inscription in Elastomers and Heat-Shrinkable Polymers
Sign Up to like & getrecommendations! Published in 2023 at "Nanomaterials"
DOI: 10.3390/nano13081347
Abstract: Optical-range bulk diffraction nanogratings were fabricated via challenging direct inscription by ultrashort (femtosecond, fs) laser pulses inside heat-shrinkable polymers (thermoplastics) and VHB 4905 elastomer. The inscribed bulk material modifications do not emerge on the polymer… read more here.
Keywords: laser; inscription; ultrashort; diffraction ... See more keywords