Zobrazeno 1 - 10
of 674
pro vyhledávání: '"attosecond transient absorption spectroscopy"'
We investigate the ultrafast electron dynamics of a model of a wide-bandgap material with inner, valence, and conduction bands excited by an intense few-femtosecond pump and monitored by a delayed attosecond extreme-ultraviolet probe pulse. Complemen
Externí odkaz:
http://arxiv.org/abs/2409.01033
Understanding initial electron thermalization has relevance to both fundamental scientific knowledge and application to the construction of novel devices. In this study, attosecond transient absorption is used to directly measure initial electron the
Externí odkaz:
http://arxiv.org/abs/2406.03567
Akademický článek
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Akademický článek
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Autor:
Yuen, C. H., Lin, C. D.
Probing vibronic coherence in molecules has been a central topic in ultrafast science, as it is an essential prerequisite to monitoring electronic motion. While experiments have demonstrated that attosecond transient absorption spectroscopy (ATAS) ca
Externí odkaz:
http://arxiv.org/abs/2307.13819
Autor:
Kim, Youngjae
We applied the time-resolved attosecond transient absorption spectroscopy to systematically investigate ultrafast optical responses of condensed matter systems. Under an intense pump pulse, absorption spectra indicate that the non-interacting electro
Externí odkaz:
http://arxiv.org/abs/2302.11391
First principle theoretical modeling of out-of-equilibrium processes observed in attosecond pump-probe transient absorption spectroscopy (TAS) triggering pure electron dynamics remains a challenging task, specially for heavy elements and/or core exci
Externí odkaz:
http://arxiv.org/abs/2211.16383
Autor:
Dong, Fulong, Liu, Jie
We investigate the attosecond transient absorption spectroscopy (ATAS) of graphene by numerically solving four-band density-matrix equations, which demonstrates apparent fish bone resonance structures. To gain insight into these interesting structure
Externí odkaz:
http://arxiv.org/abs/2204.06262
We study effects of nonadiabatic couplings in a model of a diatomic molecule in the context of attosecond transient absorption spectroscopy. By using a model system consisting of four diabatic electronic states and with a variable strength of the dia
Externí odkaz:
http://arxiv.org/abs/2103.01582
Publikováno v:
Phys. Rev. Lett. 127, 123001 (2021)
Tracing ultrafast processes induced by interaction of light with matter is often very challenging. In molecular systems, the initially created electronic coherence becomes damped by the slow nuclear rearrangement on a femtosecond timescale which make
Externí odkaz:
http://arxiv.org/abs/2010.15051