Meyer, M., Cubaynes, D., O’Keeffe, P., Luna, H., Yeates, Patrick ORCID: 0000-0002-6734-0590, Kennedy, Eugene T. ORCID: 0000-0002-0710-5281, Costello, John T. ORCID: 0000-0003-4677-9999, Orr, P., Taïeb, R., Maquet, A., Düsterer, S., Radcliffe, P., Redlin, H., Azima, A., Plönjes, E. and Feldhaus, J. (2006) Two-color photoionization in xuv free-electron and visible laser fields. Physical Review A, 74 (1). 011401-1. ISSN 1050-2947
Abstract
Two-photon ionization of atomic helium has been measured by combining femtosecond extreme-ultraviolet pulses from the free-electron laser in Hamburg (FLASH at DESY) with intense light pulses from a synchronized neodymium-doped yttrium lithium fluoride laser. Sidebands appear in the photoelectron spectra when the two laser pulses overlap in both space and time. Their intensity exhibits a characteristic dependence on the relative time delay between the ionizing and the dressing pulses and provides an inherent time marker for time-resolved pump-probe experiments. The measurements of the sidebands are in good agreement with theoretical predictions and allow for a direct analysis of two-photon ionization, free from processes related to interference between multiple quantum paths.
Metadata
Item Type: | Article (Published) |
---|---|
Refereed: | Yes |
Subjects: | Physical Sciences > Physics |
DCU Faculties and Centres: | Research Institutes and Centres > National Centre for Plasma Science and Technology (NCPST) DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences |
Publisher: | The American Physical Society |
Official URL: | http://dx.doi.org/10.1103/PhysRevA.74.011401 |
Copyright Information: | © 2006 The American Physical Society |
Use License: | This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License |
Funders: | Enterprise Ireland, Higher Education Authority, Science Foundation Ireland |
ID Code: | 15604 |
Deposited On: | 05 Aug 2010 13:44 by DORAS Administrator . Last Modified 07 Oct 2021 12:44 |
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