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

The intensity-dependent resonance-like enhancement phenomenon in high-orderabove-threshold ionization spectrum is a typical quantum effect for atoms ormolecules in the intense laser field, which has not been well understood. Thecalculations of TDSE are in remarkable agreement with the experimental data,but they can not clarify the contributions of the bound states. Thesemi-classical approach of strong field approximation, in which no excitedstates are involved, can obtain the similar phenomenon, but the laserintensities of enhanced regions predicted by SFA are inconsistent with theresults of TDSE. In this letter, a new fully quantum model is established fromTDSE with not any excited states. Two types of enhanced structures, unimodaland multimodal structures, are found in the results of TDSE and model. Besides,the calculations of model reproduce the key features of the results of TDSE. Itshows that the excited states are not the key factor in the resonance-likeenhancements in our calculated system, since there are not any excited statesin our model. Based on the calculations of our model, we show that suchresonance-like enhancements are caused by the constructive interference ofdifferent momentum transfer channels. Last, the Fano-like lineshapes are alsodiscussed for the features of multi-channel interference.

Multi-Channel Interference in Resonance-Like Enhancement of High-Order Above-Threshold Ionization