Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Babushkin, Ihar"'
At the fundamental level, full description of light-matter interaction requires quantum treatment of both matter and light. However, for standard light sources generating intense laser pulses carrying quadrillions of photons in a coherent state, clas
Externí odkaz:
http://arxiv.org/abs/2401.02817
Autor:
Husakou, Anton, Babushkin, Ihar, Fedotova, Olga, Rusetsky, Ryhor, Khasanov, Oleg, Smirnova, Tatsiana, Fedotov, Alexander, Sapaev, Usman, Apostolova, Tzveta
We propose a new concept for generation of ultrashort pulses based on transient plasmonic resonance in nanoparticle composites. Photoionization and free-carriers plasma change the susceptibility of nanoparticles on a few-femtosecond scale. This resul
Externí odkaz:
http://arxiv.org/abs/2301.05035
Autor:
Husakou, Anton, Fedotova, Olga, Rusetsky, Ryhor, Khasanov, Oleg, Smirnova, Tatsiana, Fedotov, Alexander, Apostolova, Tzveta, Babushkin, Ihar, Sapaev, Usman
We describe a unified numerical model which allows fast and accurate simulation of nonlinear light propagation in nanoparticle composites, including various effects such as group velocity dispersion, second- and third-order nonlinearity, quasi-free-c
Externí odkaz:
http://arxiv.org/abs/2301.04531
In the field of high-order harmonic generation from solids, the electron motion typically exceeds the edge of the first Brillouin zone. In conventional nonlinear optics, on the other hand, the excursion of band electrons is negligible. Here, the tran
Externí odkaz:
http://arxiv.org/abs/2211.03399
Autor:
Oreshnikov, Ivan, Melchert, Oliver, Willms, Stephanie, Bose, Surajit, Babushkin, Ihar, Demircan, Ayhan, Morgner, Uwe, Yulin, Alexey
For waveguides with two separate regions of anomalous dispersion, it is possible to create a quasi-stable two-color solitary wave. In this paper we consider how those waves interact with dispersive radiation, both generation of Cherenkov radiation an
Externí odkaz:
http://arxiv.org/abs/2207.03541
Multimode nonlinear optics offers to overcome a long-standing limitation of fiber optics, tightly phase locking several spatial modes and enabling the coherent transport of a wavepacket through a multimode fiber. A similar problem is encountered in t
Externí odkaz:
http://arxiv.org/abs/2106.08184
Publikováno v:
Phys. Rev. Lett. 128, 090502 (2022)
Photons, acting as ``flying qubits'' in propagation geometries such as waveguides, appear unavoidably in the form of wavepackets (pulses). The actual shape of the photonic wavepacket, as well as possible temporal/spectral correlations between the pho
Externí odkaz:
http://arxiv.org/abs/2105.13814
Brunel harmonics appear in the optical response of an atom in process of laser-induced ionization, when the electron leaves the atom and is accelerated in the strong optical field. In contrast to recollision-based harmonics, the Brunel mechanism does
Externí odkaz:
http://arxiv.org/abs/2105.04627
Autor:
Babushkin, Ihar, Shi, Liping, Demircan, Ayhan, Morgner, Uwe, Herrmann, Joachim, Husakou, Anton
Optical properties of metallic nanoparticles are most often considered in terms of plasmons, the coupled states of light and quasi-free electrons. Here we predict that confinement of electrons inside the nanostructure leads to another, very different
Externí odkaz:
http://arxiv.org/abs/2104.14637
Autor:
Shi, Liping, Babushkin, Ihar, Husakou, Anton, Melchert, Oliver, Frank, Bettina, Yi, Juemin, Wetzel, Gustav, Demircan, Ayhan, Lienau, Christoph, Giessen, Harald, Ivanov, Misha, Morgner, Uwe, Kovacev, Milutin
Recently, asymmetric plasmonic nanojunctions [Karnetzky et. al., Nature Comm. 2471, 9 (2018)] have shown promise as on-chip electronic devices to convert femtosecond optical pulses to current bursts, with a bandwidth of multi-terahertz scale, althoug
Externí odkaz:
http://arxiv.org/abs/2103.03091