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Monitoring Atomic Cluster Expansion by High-Harmonic Generation

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

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Becker,  A.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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

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Citation

Strelkov, V., Saalmann, U., Becker, A., & Rost, J. M. (2011). Monitoring Atomic Cluster Expansion by High-Harmonic Generation. Physical Review Letters, 107(11): 113901.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0029-8C29-C
Abstract
High-harmonic generation is shown to be capable of providing time-resolved information about the particle density of a complex system. As an example, we study numerically high-harmonic generation from expanding xenon clusters in a pump-probe laser scheme, where the pump laser pulse induces the cluster explosion and the probe pulse generates harmonics in the expanding cluster. We show that the high-harmonic spectra characterize the properties of the expanding cluster. Hence, measuring the dependence of the harmonic signal on the pump-probe delay suggests itself as an experimental tool to monitor many-particle dynamics with unique temporal resolution; based on optical measurements, this technique is naturally free from any spatial charge effects.