Coulomb time delays in high harmonic generation
Measuring the time it takes to remove an electron from an atom or molecule during photoionization has been the focus of a number of recent experiments using newly developed attosecond spectroscopies. The interpretation of such measurements, however, depends critically on the measurement protocol and...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2017-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/aa55ea |
| _version_ | 1827873583662104576 |
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| author | Lisa Torlina Olga Smirnova |
| author_facet | Lisa Torlina Olga Smirnova |
| author_sort | Lisa Torlina |
| collection | DOAJ |
| description | Measuring the time it takes to remove an electron from an atom or molecule during photoionization has been the focus of a number of recent experiments using newly developed attosecond spectroscopies. The interpretation of such measurements, however, depends critically on the measurement protocol and the specific observables available in each experiment. One such protocol relies on high harmonic generation. In this paper, we derive rigorous and general expressions for ionisation and recombination times in high harmonic generation experiments. We show that these times are different from, but related to, ionisation times measured in photoelectron spectroscopy: that is, those obtained using the attosecond streak camera, RABBITT and attoclock methods. We then proceed to use the analytical R -matrix theory to calculate these times and compare them with experimental values. |
| first_indexed | 2024-03-12T16:39:09Z |
| format | Article |
| id | doaj.art-1873a66d61154ede9228f36c43d98900 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:39:09Z |
| publishDate | 2017-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-1873a66d61154ede9228f36c43d989002023-08-08T14:34:50ZengIOP PublishingNew Journal of Physics1367-26302017-01-0119202301210.1088/1367-2630/aa55eaCoulomb time delays in high harmonic generationLisa Torlina0Olga Smirnova1Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Strasse 2 A, D-12489 Berlin, GermanyMax Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Strasse 2 A, D-12489 Berlin, Germany; Technische Universität Berlin , Ernst-Ruska-Gebäude, Hardenbergstr. 36A, D-10623, Berlin, GermanyMeasuring the time it takes to remove an electron from an atom or molecule during photoionization has been the focus of a number of recent experiments using newly developed attosecond spectroscopies. The interpretation of such measurements, however, depends critically on the measurement protocol and the specific observables available in each experiment. One such protocol relies on high harmonic generation. In this paper, we derive rigorous and general expressions for ionisation and recombination times in high harmonic generation experiments. We show that these times are different from, but related to, ionisation times measured in photoelectron spectroscopy: that is, those obtained using the attosecond streak camera, RABBITT and attoclock methods. We then proceed to use the analytical R -matrix theory to calculate these times and compare them with experimental values.https://doi.org/10.1088/1367-2630/aa55eastrong field ionisationhigh harmonic generationCoulomb effectsanalytical R-matrix theoryionisation and recombination times |
| spellingShingle | Lisa Torlina Olga Smirnova Coulomb time delays in high harmonic generation New Journal of Physics strong field ionisation high harmonic generation Coulomb effects analytical R-matrix theory ionisation and recombination times |
| title | Coulomb time delays in high harmonic generation |
| title_full | Coulomb time delays in high harmonic generation |
| title_fullStr | Coulomb time delays in high harmonic generation |
| title_full_unstemmed | Coulomb time delays in high harmonic generation |
| title_short | Coulomb time delays in high harmonic generation |
| title_sort | coulomb time delays in high harmonic generation |
| topic | strong field ionisation high harmonic generation Coulomb effects analytical R-matrix theory ionisation and recombination times |
| url | https://doi.org/10.1088/1367-2630/aa55ea |
| work_keys_str_mv | AT lisatorlina coulombtimedelaysinhighharmonicgeneration AT olgasmirnova coulombtimedelaysinhighharmonicgeneration |