The envelope Hamiltonian for electron interaction with ultrashort pulses
For ultrashort VUV pulses with a pulse length comparable to the orbital time of the bound electrons they couple to, we propose a simplified envelope Hamiltonian. It is based on the Kramers–Henneberger representation in connection with a Floquet expansion of the strong-field dynamics but keeps the ti...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/7/073005 |
| _version_ | 1797751149676199936 |
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| author | Koudai Toyota Ulf Saalmann Jan M Rost |
| author_facet | Koudai Toyota Ulf Saalmann Jan M Rost |
| author_sort | Koudai Toyota |
| collection | DOAJ |
| description | For ultrashort VUV pulses with a pulse length comparable to the orbital time of the bound electrons they couple to, we propose a simplified envelope Hamiltonian. It is based on the Kramers–Henneberger representation in connection with a Floquet expansion of the strong-field dynamics but keeps the time dependence of the pulse envelope explicit. Thereby, the envelope Hamiltonian captures the essence of the physics—light-induced shifts of bound states, single-photon absorption, and non-adiabatic electronic transitions. It delivers quantitatively accurate ionization dynamics and allows for a physical insight into the processes occurring. Its minimal requirements for construction in terms of laser parameters make it ideally suited for a large class of atomic and molecular problems. |
| first_indexed | 2024-03-12T16:43:16Z |
| format | Article |
| id | doaj.art-2ecdf51258ef41af8fd65c7d8598963e |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:43:16Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-2ecdf51258ef41af8fd65c7d8598963e2023-08-08T14:19:19ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117707300510.1088/1367-2630/17/7/073005The envelope Hamiltonian for electron interaction with ultrashort pulsesKoudai Toyota0Ulf Saalmann1Jan M Rost2Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, D-01187 Dresden, GermanyMax Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, D-01187 Dresden, GermanyMax Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, D-01187 Dresden, GermanyFor ultrashort VUV pulses with a pulse length comparable to the orbital time of the bound electrons they couple to, we propose a simplified envelope Hamiltonian. It is based on the Kramers–Henneberger representation in connection with a Floquet expansion of the strong-field dynamics but keeps the time dependence of the pulse envelope explicit. Thereby, the envelope Hamiltonian captures the essence of the physics—light-induced shifts of bound states, single-photon absorption, and non-adiabatic electronic transitions. It delivers quantitatively accurate ionization dynamics and allows for a physical insight into the processes occurring. Its minimal requirements for construction in terms of laser parameters make it ideally suited for a large class of atomic and molecular problems.https://doi.org/10.1088/1367-2630/17/7/073005photo-ionizationfree-electrons laserFloquet expansionlight–matter coupling33.60.+q32.80.Wr |
| spellingShingle | Koudai Toyota Ulf Saalmann Jan M Rost The envelope Hamiltonian for electron interaction with ultrashort pulses New Journal of Physics photo-ionization free-electrons laser Floquet expansion light–matter coupling 33.60.+q 32.80.Wr |
| title | The envelope Hamiltonian for electron interaction with ultrashort pulses |
| title_full | The envelope Hamiltonian for electron interaction with ultrashort pulses |
| title_fullStr | The envelope Hamiltonian for electron interaction with ultrashort pulses |
| title_full_unstemmed | The envelope Hamiltonian for electron interaction with ultrashort pulses |
| title_short | The envelope Hamiltonian for electron interaction with ultrashort pulses |
| title_sort | envelope hamiltonian for electron interaction with ultrashort pulses |
| topic | photo-ionization free-electrons laser Floquet expansion light–matter coupling 33.60.+q 32.80.Wr |
| url | https://doi.org/10.1088/1367-2630/17/7/073005 |
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