| Autor: |
P.L. Price, L. D. Noordam, H. B. van Linden van den Heuvell, Francis Robicheaux |
| Přispěvatelé: |
Quantum Gases & Quantum Information (WZI, IoP, FNWI) |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Physical Review A, 89(3). American Physical Society |
| ISSN: |
1050-2947 |
| Popis: |
We have performed calculations of attosecond laser-atom interactions for laser intensities where interesting two- and three-photon effects become relevant. In particular, we examine the case of ``hole burning'' in the initial orbital. Hole burning is present when the laser-pulse duration is shorter than the classical radial period because the electron preferentially absorbs the photon near the nucleus. We also examine how the three-photon Raman process can lead to a time delay in the outgoing electron for the energy near one-photon absorption. For excitation out of the hydrogen $2s$ state, an intensity of $2.2\ifmmode\times\else\texttimes\fi{}{10}^{16}$ W/cm${}^{2}$ leads to a 6-as delay of the outgoing electron. We argue that this delay is due to the hole burning in the initial state. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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