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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

High-order harmonic generation (HHG) is investigated for H$_2^+$ and itsisotopomers under seven- and ten-cycle trapezoidal laser pulses at 800 nmwavelength and $I$=4$\times 10^{14}$ W$/$cm$^2$ intensity. We solvednumerically full-dimensional electronic time-dependent Schr\"{o}dinger equationwith and without the Born-Oppenheimer approximation. We show that the HHG atthe falling edge of a trapezoidal laser pulse can result in redshift andcomplexity on the total HHG spectrum which can be removed by consideringdifferent laser pulse duration and nuclear motion not possible for sin$^2$ andGaussian laser pulses. We resolve the redshifts and complexities of the HHGspectra into different electronic and vibrational states and theirinterferences.

Complicated high-order harmonic generation due to the falling edge of a trapezoidal laser pulse