English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We theoretically investigate the generation of intense keV attosecond pulsesin an orthogonally polarized multicycle midinfrared two-color laser field. Itis demonstrated that multiple continuum-like humps, which have a spectral widthof about twenty orders of harmonics and an intensity of about one order higherthan adjacent normal harmonic peaks, are generated under proper two-colordelays, owing to the reduction of the number of electron-ion recollisions andsuppression of inter-half-cycle interference effect of multiple electrontrajectories when the long wavelength midinfrared driving field is used. Usingthe semiclassical trajectory model, we have revealed the two-dimensionalmanipulation of the electron-ion recollision process, which agrees well withthe time frequency analysis. By filtering these humps, intense isolatedattosecond pulses are directly generated without any phase compensation. Ourproposal provides a simple technique to generate intense isolated attosecondpulses with various central photon energies covering the multi-keV spectralregime by using multicycle driving pulses with high pump energy in experiment.

Intense keV isolated attosecond pulse generation by orthogonally polarized multicycle midinfrared two-color laser field