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Journal Article

Single-photon ionization in intense, fluctuating pulses

MPS-Authors
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Giri,  Sajal Kumar
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Saalmann,  Ulf
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Rost,  Jan M.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

External Resource

http://www.tandfonline.com/doi/abs/10.1080/09500340.2016.1271150
(Publisher version)

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Citation

Giri, S. K., Saalmann, U., & Rost, J. M. (2017). Single-photon ionization in intense, fluctuating pulses. Journal of Modern Optics, 64(10-11), 1004-1009. doi:10.1080/09500340.2016.1271150.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-C379-9
Abstract
High intensities in laser-matter interaction drive nonlinear processes. Whereas at low frequencies thereby multi-photon absorption and above-threshold ionization emerges, in the case of high frequencies single-photon absorption remains prevailing. However, multiple absorption and emission of photons renders this single-photon ionization sensitive to energy and shape of the laser pulse. This becomes relevant for intense, fluctuating pulses as generated in existing and upcoming free-electron laser sources. We study their effect on the ionization of a model atom numerically and formulate suitable parameters to characterize the evolution from the linear response at low intensity to the intricate dynamics at high intensities.