The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics

, Volume 12, Issue 2, pp 227-233

First online:

Optimizing the efficiency in high order harmonic generation optimization by two-color fields

  • E. CormierAffiliated withCentre Laser Intense et Applications (UMR 5107 du CNRS), Université de Bordeaux I, 351 cours de la Libération, 33405 Talence, France
  • , M. LewensteinAffiliated withInstitut für Theoretische Physik, Universität Hannover, 30167 Hannover, Germany

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We address the problem of the optimization of high-order harmonic generation by two laser fields of frequencies \(\) and \(\) respectively, through a theoretical approach. The parameters that are investigated are the two lasers intensities as well as the relative phase between the two fields. We show that a moderate, but significant increase of efficiency can be achieved in that context and give the domain of optimized parameters. Moreover, we quantitatively investigate the gain and set the limitation of the optimization using such coherent control methods.

PACS. 42.65.Ky Harmonic generation, frequency conversion - 42.79.Nv Optical frequency converters - 32.80.Wr Other multiphoton processes