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- W2897087074 abstract "Dynamically rich nature of the high-order harmonic generation process lends itself to a variety of ways to increase photon yield and extend the harmonic cut-off frequency. We show here that high-harmonic generation from an atom confined inside an attractive potential shell can show a dramatic increase in the photon yield in certain cases. We consider an endohedrally confined hydrogen atom inside a C$_{60}$ cage as an example, and consider three distinct physical situations in which the initial state is (1) entirely confined inside the C$_{60}$, (2) partially outside, and (3) mainly localized on the cage wall. We demonstrate that when the atom-cage system starts in a state with a classical turning point outside the C$_{60}$ shell, the high-harmonic photon yield can be enhanced up to 4 orders of magnitude when compared with a free atom in the same initial state. We explain the underlying physical mechanisms in each case using fully three-dimensional quantum simulations. This gives a prime example of how directly coupling an atom to a nanostructure can alter strong field processes in atoms in interesting ways." @default.
- W2897087074 created "2018-10-26" @default.
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- W2897087074 date "2018-10-21" @default.
- W2897087074 modified "2023-09-27" @default.
- W2897087074 title "Drastic enhancement of high-order harmonic generation from endohedrally confined atoms" @default.
- W2897087074 hasPublicationYear "2018" @default.
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