Generation of broad XUV continuous high harmonic spectra and isolated attosecond pulses with intense mid-infrared lasers
Open Access
- 9 December 2011
- journal article
- research article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 45 (1), 011001
- https://doi.org/10.1088/0953-4075/45/1/011001
Abstract
We present experimental results showing the appearance of a near-continuum in the high-order harmonic generation spectra of atomic and molecular species as the driving laser intensity of a mid-infrared pulse increases. Detailed macroscopic simulations reveal that these near-continuum spectra are capable of producing isolated attosecond pulses (IAPs) in the far field if a proper spatial filter is applied. Further, our simulations show that the near-continuum spectra and the IAPs are a product of the strong temporal and spatial reshaping (blue shift and defocusing) of the driving field. This offers a possibility of producing IAPs with a broad range of photon energy, including plateau harmonics, by mid-IR laser pulses even without carrier-envelope phase stabilization.This publication has 44 references indexed in Scilit:
- The attosecond nonlinear optics of bright coherent X-ray generationNature Photonics, 2010
- Attosecond physicsReviews of Modern Physics, 2009
- The Attosecond RevolutionOptics and Photonics News, 2008
- Single-Cycle Nonlinear OpticsScience, 2008
- Attosecond scienceNature Physics, 2007
- Time-gated high-order harmonic generationPhysical Review A, 2003
- Attosecond metrologyNature, 2001
- Observation of a Train of Attosecond Pulses from High Harmonic GenerationScience, 2001
- High-Harmonic Generation of Attosecond Pulses in the “Single-Cycle” RegimePhysical Review Letters, 1997
- Subfemtosecond pulsesOptics Letters, 1994