Results 11 to 20 of about 261,800 (180)
High-order harmonic generation in an organic molecular crystal [PDF]
Nature CommunicationsHigh-order harmonic generation (HHG) is a powerful tool for probing electronic structure and ultrafast dynamics in matter. Traditionally studied in atomic and molecular gases, HHG has recently been extended to condensed matter, enabling all-optical ...
Falk-Erik Wiechmann +8 more
doaj +2 more sources
Tunable high-order harmonic generation in GeSbTe nano-films [PDF]
NanophotonicsHigh-order harmonic generation (HHG) in solids opens new frontiers in ultrafast spectroscopy of carrier and field dynamics in condensed matter, picometer resolution structural lattice characterization and designing compact platforms for attosecond pulse ...
Korolev Viacheslav +11 more
doaj +2 more sources
High-order harmonic generation in liquid crystals
APL PhotonicsThermotropic liquid crystals are versatile optical materials that exhibit a state of matter intermediate between liquids and solids. Their properties can change significantly with temperature, pressure, or other external factors, leading to different ...
Andrea Annunziata +7 more
doaj +3 more sources
Spatial Aberrations in High-Order Harmonic Generation
Ultrafast ScienceWe investigate the spatial characteristics of high-order harmonic radiation generated in argon and observe cross-like patterns in the far field. An analytical model describing harmonics from an astigmatic driving beam reveals that these patterns result ...
Marius Plach +13 more
doaj +3 more sources
Efficient high-order harmonic generation boosted by below-threshold harmonics. [PDF]
Sci Rep, 2013 High-order harmonic generation (HHG) in gases has been established as an important technique for the generation of coherent extreme ultraviolet (XUV) pulses at ultrashort time scales. Its main drawback, however, is the low conversion efficiency, setting limits for many applications, such as ultrafast coherent imaging, nonlinear processes in the XUV ...
Brizuela F +9 more
europepmc +5 more sources
Author Correction: High-order harmonic generation in an organic molecular crystal [PDF]
Nature CommunicationsFalk-Erik Wiechmann +8 more
doaj +2 more sources
Fourier-limited attosecond pulse generation with magnetically pumped high-order harmonic generation [PDF]
EPJ Web of Conferences, 2022 After more than two decades of attosecond physics, the generation and control of the shortest laser pulses available remains as a complex task. One of the main limitations of reducing the temporal duration of attosecond pulses emitted from high-order ...
Martín-Hernández Rodrigo +2 more
doaj +1 more source
High-order harmonic generation in femtosecond laser micromachined devices [PDF]
EPJ Web of Conferences, 2019 We demonstrate the generation of high-order harmonics in a fused-silica device fabricated through femtosecond laser micromachining. This achievement paves the way for the miniaturization of HHG applications from large-scale laboratories to ...
Ciriolo Anna G. +10 more
doaj +1 more source
Describing High-Order Harmonic Generation Using Quantum Optical Models
Photonics, 2021 Optical generation of high-order harmonics is a prototypical example of nonlinear light–matter interactions in the high-field regime. Quantum optical effects have recently been demonstrated to have a significant influence on this phenomenon.
Péter Földi +3 more
doaj +1 more source
Observation of chromatic effects in high-order harmonic generation
Physical Review Research, 2023 High-harmonic generation sources can produce coherent, broadband radiation at extreme-ultraviolet and soft-x-ray wavelengths. The wavefronts of the generated high-order harmonics are influenced by the incident laser field, the generation conditions, and ...
Xiaomeng Liu +5 more
doaj +1 more source