Efficient control of quantum paths via dual-gas high harmonic generation

A. Willner, F. Tavella, Mark Yeung, Thomas Dzelzainis, C. Kamperidis, M. Bakarezos, D. Adams, R. Riedel, M. Schulz, M.C. Hoffmann, W. Hu, J. Rossbach, M. Drescher, V.S. Yakovlev, N.A. Papadogiannis, M. Tatarakis, Brendan Dromey, Matthew Zepf

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


The accurate control of the relative phase of multiple distinct sources of radiation produced by high harmonic generation is of central importance in the continued development of coherent extreme UV (XUV) and attosecond sources. Here, we present a novel approach which allows extremely accurate phase control between multiple sources of high harmonic radiation generated within the Rayleigh range of a single-femtosecond laser pulse using a dualgas, multi-jet array. Fully ionized hydrogen acts as a purely passive medium and allows highly accurate control of the relative phase between each harmonic source. Consequently, this method allows quantum path selection and rapid signal growth via the full coherent superposition of multiple HHG sources (the so-called quasi-phase-matching). Numerical simulations elucidate the complex interplay between the distinct quantum paths observed in our proof-of-principle experiments.
Original languageEnglish
Article number113001
JournalNew Journal of Physics
Publication statusPublished - Nov 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Efficient control of quantum paths via dual-gas high harmonic generation'. Together they form a unique fingerprint.

Cite this