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XUV Supercontinuum Generated by Incommensurate Two-Color Mid-IR Optical Parametric Amplifier

  • M. Negro
  • C. Vozzi
  • K. Kovacs
  • C. Altucci
  • R. Velotta
  • F. Frassetto
  • L. Poletto
  • P. Villoresi
  • S. De Silvestri
  • V. Tosa
  • S. Stagira
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 125)

Abstract

High-order harmonic generation is nowadays a topic of crucial interest since it allows the production of isolated attosecond pulses. Several efforts have been made so far for extending the generation of attosecond bursts beyond the 100 eV spectral region, in order to access to deeper electronic states in atoms and molecules. Recently, mid-infrared laser sources have demonstrated to be ideal candidates for pushing the high harmonic emission up to the soft X-rays. Here we show that it is possible to obtain continuous harmonic spectra, that are the signature of single attosecond pulse generation, by properly mixing two laser pulses, coming from optical parametric amplifiers, with wavelengths of 1.35 and 1.75 μm respectively, with either parallel or perpendicular polarizations. Our results demonstrate the generation of isolated attosecond burst driven by mid-infrared laser pulses of a duration larger than 30 fs.

Keywords

Harmonic Spectrum Difference Frequency Generation Attosecond Pulse Driving Field Optical Parametric Amplifier 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • M. Negro
    • 1
  • C. Vozzi
    • 2
  • K. Kovacs
    • 3
  • C. Altucci
    • 4
  • R. Velotta
    • 4
  • F. Frassetto
    • 5
  • L. Poletto
    • 5
  • P. Villoresi
    • 5
  • S. De Silvestri
    • 1
  • V. Tosa
    • 3
  • S. Stagira
    • 1
  1. 1.Dipartimento di FisicaPolitecnico di MilanoMilanItaly
  2. 2.Istituto di Fotonica e Nanotecnologie, CNRMilanItaly
  3. 3.National Institute R&D Isotopic and Molecular TechnologiesCluj-NapocaRomania
  4. 4.CNISM & Dipartimento di FisicaUniversità di Napoli Federico IINaplesItaly
  5. 5.CNR-IFN & DEIUniversità di PadovaPadovaItaly

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