Abstract

We report theoretical calculations of high-order harmonic generation (HHG) of Xe with the inclusion of multielectron effects and macroscopic propagation of the fundamental and harmonic fields in an ionizing medium. By using the time-frequency analysis we show that the reshaping of the fundamental laser field is responsible for the continuum structure in the HHG spectra. We further suggest a method for obtaining an isolated attosecond pulse (IAP) by using a filter centered on axis to select the harmonics in the far field with different divergence. We also discuss the carrier-envelope-phase dependence of an IAP and the possibility to optimize the yield of the IAP. With intense few-cycle mid-infrared lasers, this offers a possible method for generating isolated attosecond pulses.

Department(s)

Physics

Keywords and Phrases

Continuum Structures; Far Field; Few-Cycle; Harmonic Field; High Order Harmonic Generation; Isolated Attosecond Pulse; Laser Fields; Midinfrared Lasers; Multi-Electron; Spatial Filterings; Theoretical Calculations; Time Frequency Analysis, Harmonic Analysis; Infrared Devices; Optical Parametric Oscillators; Pulse Generators, Infrared Lasers

International Standard Serial Number (ISSN)

1050-2947

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2011 American Physical Society (APS), All rights reserved.

Included in

Physics Commons

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