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Conference Paper

Harmonic generation from laser-driven vacuum

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

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

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Citation

Di Piazza, A., Hatsagortsyan, K. Z., & Keitel, C. H. (2006). Harmonic generation from laser-driven vacuum. In D. Batani, & M. Lontano (Eds.), Superstrong fields in plasmas: Third International Conference on Superstrong Fields in Plasmas, Varenna, Italy, 19 - 24 September 2005; [selected papers] (pp. 436-441). USA: AIP.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-803D-7
Abstract
We investigate harmonic generation from vacuum in the field of a superstrong standing laser wave. We show analitycally that for laser electric fields larger than Ecr = m2c3/e = 1.3 · 1016 V/cm high order harmonics of the pumping laser are generated. The harmonic spectrum shows a wide plateau followed by a cut-off at photon energies M ~ with EL the amplitude of the 6laser field. In the weak field limit EL Ecr the emission of high harmonics is very unlikely. This is now the experimentally interesting case and we show that "laser assisted" photon-photon scattering could be observed with optical lasers available today.