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Fields of an ultrashort tightly focused laser pulse

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Li,  Jiang-Xing
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;

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Salamin,  Yousef
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;
Department of Physics, American University of Sharjah, POB 26666, Sharjah, United Arab Emirates;

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Hatsagortsyan,  Karen Zaven
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;

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Keitel,  Christoph H.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;

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Fulltext (public)

1504.00988.pdf
(Preprint), 829KB

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Citation

Li, J.-X., Salamin, Y., Hatsagortsyan, K. Z., & Keitel, C. H. (2016). Fields of an ultrashort tightly focused laser pulse. Journal of the Optical Society of America B-Optical Physics, 33(3), 405-411. doi:10.1364/JOSAB.33.000405.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002A-1315-7
Abstract
Analytic expressions for the electromagnetic fields of an ultrashort, tightly focused, linearly polarized laser pulse in vacuum are derived from scalar and vector potentials, using a small parameter which assumes a small bandwidth of the laser pulse. The derived fields are compared with those of the Lax series expansion and the complex-source-point approaches and are shown to be well-behaved and accurate even in the subcycle pulse regime. We further demonstrate that terms stemming from the scalar potential and due to a fast varying pulse envelope are non-negligible and may significantly influence laser-matter interactions.