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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 15,
  • Issue 7,
  • pp. 071901-
  • (2017)

Intense keV IAP generation by orthogonally polarized multicycle midinfrared two-color laser fields

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Abstract

We theoretically investigate the attosecond pulse generation in an orthogonal multicycle midinfrared two-color laser field. It is demonstrated that multiple continuum-like humps, which consist of about twenty orders of harmonics and an intensity of about one order higher than the adjacent normal harmonics, are generated when longer wavelength driving fields are used. By filtering these humps, intense isolated attosecond pulses (IAPs) are directly generated without any phase compensation. Our proposal provides a simple technique to generate intense IAPs with various central photon energies covering the multi-keV spectral regime by using multicycle midinfrared driving pulses with high pump energy in the experiment.

© 2017 Chinese Laser Press

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