Noncollinear Polarization Gating of Attosecond Pulse Trains in the Relativistic Regime

M. Yeung, J. Bierbach, E. Eckner, S. Rykovanov, S. Kuschel, A. Sävert, M. Förster, C. Rödel, G. G. Paulus, S. Cousens, M. Coughlan, B. Dromey, M. Zepf

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

High order harmonics generated at relativistic intensities have long been recognized as a route to the most powerful extreme ultraviolet pulses. Reliably generating isolated attosecond pulses requires gating to only a single dominant optical cycle, but techniques developed for lower power lasers have not been readily transferable. We present a novel method to temporally gate attosecond pulse trains by combining noncollinear and polarization gating. This scheme uses a split beam configuration which allows pulse gating to be implemented at the high beam fluence typical of multi-TW to PW class laser systems. Scalings for the gate width demonstrate that isolated attosecond pulses are possible even for modest pulse durations achievable for existing and planned future ultrashort high-power laser systems. Experimental results demonstrating the spectral effects of temporal gating on harmonic spectra generated by a relativistic laser plasma interaction are shown.

Original languageEnglish
Article number193903
JournalPhysical Review Letters
Volume115
Issue number19
DOIs
Publication statusPublished - 04 Nov 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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