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Expediente v.26, n. 53

open access: yesGeosul, 2013
Expediente  Revista Geosul v.26, n ...
Revista Geosul
doaj   +3 more sources

Expediente v. 23, n. 53, 2018

open access: yesEncontros Bibli, 2018
Expediente v. 23, n.
Enrique Muriel-Torrado
doaj   +2 more sources

Nonlinear Scattering of 248 nm Wavelength Light in High-Pressure SF6 and CH4 Gases for the Temporal Compression of a 20 ns KrF Laser Pulse

open access: yesPhotonics, 2023
The nonlinear compression of narrowband (Δν ≈ 0.2 cm−1) 20 ns KrF laser pulses in SF6 at 10 atm and in CH4 at 50 atm pressure was studied. Both SBS and SRS optically phase-conjugated backward-reflected radiation was registered with an energy reflectivity
Vladimir D. Zvorykin   +5 more
doaj   +1 more source

Monochromatic Conical IR Emission from Decaying KrF Laser Filaments in Xenon as Coherent Stimulated Four-Wave Mixing Process

open access: yesPhotonics, 2021
We develop theoretical background for the new nonlinear optical phenomenon of narrowly directed monochromatic IR conical emission which has been recently observed when 248-nm UV filaments propagate in xenon (V. D. Zvorykin, et al., Laser Phys. Lett.
Igor V. Smetanin   +5 more
doaj   +1 more source

Photophysical Properties of Eu3+ β-Diketonates with Extended π-Conjugation in the Aromatic Moiety

open access: yesInorganics, 2022
The influence of the degree of π-conjugation in biaroylmethane ligands upon Eu3+ luminescence efficiency in corresponding neutral tris-complexes was investigated in depth. The data obtained by both steady-state and time-resolved luminescence measurements
Vladislav M. Korshunov   +6 more
doaj   +1 more source

Stimulated Thermal Scattering in Two-Photon Absorbing Nanocolloids under Laser Radiation of Nanosecond-to-Picosecond Pulse Widths

open access: yesNanomaterials, 2022
Recent discoveries in nonlinear optical properties of nanoparticle colloids make actual the challenge to lower the energy threshold of phase conjugation and move it into the domain of shorter pulse widths.
Alexander I. Erokhin   +4 more
doaj   +1 more source

Influence of Ligand Environment Stoichiometry on NIR-Luminescence Efficiency of Sm3+, Pr3+ and Nd3+ Ions Coordination Compounds

open access: yesMolecules, 2023
Six new complexes of the ligand HQcy (-4-(cyclohexanecarbonyl)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one) and Ln3+ ions with emission in the near-infrared (Nd3+) or visible and near-infrared (Sm3+, Pr3+) spectral regions were synthesized and ...
Trofim Polikovskiy   +9 more
doaj   +1 more source

Polarization-Sensitive Surface-Enhanced In Situ Photoluminescence Spectroscopy of S. aureus Bacteria on Gold Nanospikes

open access: yesSensors, 2020
We report the possibility of a time-resolved bacterial live/dead dynamics observation with the use of plasmonic nanospikes. Sharp nanospikes, fabricated on a 500-nm thick gold film by laser ablation with the use of 1030-nm femtosecond pulses, were tested
Irina Saraeva   +8 more
doaj   +1 more source

Photodynamics of Bright Subnanosecond Emission from Pure Single-Photon Sources in Hexagonal Boron Nitride

open access: yesNanomaterials, 2022
Bright and stable emitters of single indistinguishable photons are crucial for quantum technologies. The origin of the promising bright emitters recently observed in hexagonal boron nitride (hBN) still remains unclear.
Alexander V. Gritsienko   +6 more
doaj   +1 more source

The role of charge-exchange processes in probing hydrogen plasma with a heavy ion beam

open access: yesMatter and Radiation at Extremes, 2023
Charge-changing processes of low-charged ions, used in hydrogen plasma probing by the heavy ion beam probe method, are considered. Along with the ionization of beam ions by plasma electrons and protons, the charge-exchange processes of ions on H atoms ...
Inga Yu Tolstikhina, V. P. Shevelko
doaj   +1 more source

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