Zobrazeno 1 - 10
of 206
pro vyhledávání: '"Gaarde, Mette"'
Autor:
Armond, Stephanie N., Hamer, Kyle A., Bhardwaj, Ravi, Mauger, Francois, Lopata, Kenneth, Schafer, Kenneth J., Gaarde, Mette B.
We compare the high-harmonic-generation (HHG) yield driven by a mid-infrared laser in three organic ring-shaped molecules, calculated using time-dependent density-functional theory (TDDFT). We average the yield over the relative orientation of the mo
Externí odkaz:
http://arxiv.org/abs/2409.11487
We show that applying a few-femtosecond mid-infrared laser pulse parallel to the backbone of a halogenated, conjugated organic molecule induces localized ionization followed by long-lasting field-free charge migration (CM). Through time-dependent den
Externí odkaz:
http://arxiv.org/abs/2408.04766
Autor:
Hamer, Kyle A., Folorunso, Aderonke S., Lopata, Kenneth, Schafer, Kenneth J., Gaarde, Mette B., Mauger, Francois
We present frequency-matched strobo-spectroscopy (FMSS) of charge migration (CM) in bromobutadiyne, simulated with time-dependent density-functional theory. CM+FMSS is a pump-probe scheme that uses a frequency-matched HHG-driving laser as an independ
Externí odkaz:
http://arxiv.org/abs/2306.14992
Publikováno v:
Communications in Nonlinear Science and Numerical Simulation 129, 107685 (2024)
We revisit Kohn-Sham time-dependent density-functional theory (TDDFT) equations and show that they derive from a canonical Hamiltonian formalism. We use this geometric description of the TDDFT dynamics to define families of symplectic split-operator
Externí odkaz:
http://arxiv.org/abs/2302.00862
Autor:
Wahyutama, Imam S., Jayasinghe, Denawakage D., Mauger, François, Lopata, Kenneth, Gaarde, Mette B., Schafer, Kenneth J.
We develop and test a method that integrates many-electron weak-field asymptotic theory (ME-WFAT) [Phys. Rev. A 89, 013421 (2014)] in the integral representation (IR) into the density functional theory (DFT) framework. In particular, we present modif
Externí odkaz:
http://arxiv.org/abs/2208.06699
Autor:
Folorunso, Aderonke S., Mauger, François, Hamer, Kyle A., Jayasinghe, Denawakage D, Wahyutama, Imam, Ragains, Justin R., Jones, Robert R., DiMauro, Louis F., Gaarde, Mette B., Schafer, Kenneth J., Lopata, Kenneth
Charge migration (CM) is a coherent attosecond process that involves the movement of localized holes across a molecule. To determine the relationship between a molecule's structure and the CM dynamics it exhibits, we perform systematic studies of par
Externí odkaz:
http://arxiv.org/abs/2207.05892
Autor:
Yue, Lun, Gaarde, Mette B.
Anomalous high-harmonic generation (HHG) arises in certain solids when irradiated by an intense laser field, as the result of a nonlinear perpendicular current akin to a Hall current. Here, we theoretically characterize the anomalous HHG mechanism, v
Externí odkaz:
http://arxiv.org/abs/2206.11935
Autor:
Hamer, Kyle A., Mauger, Francois, Folorunso, Aderonke S., Lopata, Kenneth, Jones, Robert R., DiMauro, Louis F., Schafer, Kenneth J., Gaarde, Mette B.
Publikováno v:
Physical Review A 106, 013103 (2022)
We introduce high-harmonic sideband spectroscopy (HHSS) and show that it can be a robust probe of attosecond charge migration (CM) in a halogenated carbon-chain molecule. We simulate both the CM and harmonic-generation (HHG) dynamics using ab initio
Externí odkaz:
http://arxiv.org/abs/2202.00730
Autor:
Yue, Lun, Hollinger, Richard, Uzundal, Can B., Nebgen, Bailey, Gan, Ziyang, Najafidehaghani, Emad, George, Antony, Spielmann, Christian, Kartashov, Daniil, Turchanin, Andrey, Qiu, Diana Y., Gaarde, Mette B., Zuerch, Michael
High-harmonic generation (HHG) in solids has been touted as a way to probe ultrafast dynamics and crystal symmetries in condensed matter systems. Here, we investigate the polarization properties of high-order harmonics generated in monolayer MoS$_2$,
Externí odkaz:
http://arxiv.org/abs/2112.13032
Autor:
Yue, Lun, Gaarde, Mette B.
High-harmonic generation (HHG) in solids has emerged in recent years as a rapidly expanding and interdisciplinary field, attracting attention from both the condensed-matter and the atomic, molecular, and optics communities. It has exciting prospects
Externí odkaz:
http://arxiv.org/abs/2111.08669