High-order harmonic generation spectrum from two coupled Floquet resonances – a non- Hermitian formulation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00517442" target="_blank" >RIV/68378271:_____/19:00517442 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1080/00268976.2019.1601788" target="_blank" >https://doi.org/10.1080/00268976.2019.1601788</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/00268976.2019.1601788" target="_blank" >10.1080/00268976.2019.1601788</a>
Alternative languages
Result language
angličtina
Original language name
High-order harmonic generation spectrum from two coupled Floquet resonances – a non- Hermitian formulation
Original language description
The quantity ψ(t − t/2)|ˆa|ψ(t + t/2) given for a square integrable wavefunction ψ allows one to define very different kinds of measurables, such as absorption spectrum (as a Fourier transform (FT) over t for t=0) as well as high-order harmonic generation (HHG) spectrum (as a FT over t for t=0). The main objective of this paper is to define this quantity based on a spectral decomposition of ψ to non-Hermitian wavefunctions obtained in complex scaling calculations. The obtained formal expression combines matrix elements based on the non-Hermitian c-inner product, and surprisingly also Cartesian (Euclidean) norms and overlaps of complex scaled wavefunctions. The exact non-Hermitian formalism is necessary for theoretical calculations of HHG at coupled photoionisation resonances, illustrated here for a multiphoton conversion in helium atom near a conical intersection.n
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/LTT17015" target="_blank" >LTT17015: Reserch in frame International Center for Dense Magnetized Plasmas</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Molecular Physics
ISSN
0026-8976
e-ISSN
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Volume of the periodical
117
Issue of the periodical within the volume
15
Country of publishing house
GB - UNITED KINGDOM
Number of pages
19
Pages from-to
2138-2156
UT code for WoS article
000465813300001
EID of the result in the Scopus database
2-s2.0-85064072183