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 report on the comparative experimental investigation on third and fifthharmonic generation (THG and FHG) in atomic and molecular gases driven bymid-infrared ultrafast laser pulses at a wavelength of ~1500 nm. We observethat the conversion efficiencies of both the THG and FHG processes saturate atsimilar peak intensities close to ~1.5\times1014 W/cm2 for argon, nitrogen, andair, whose ionization potentials are close to each other. Near the saturationintensity, the ratio of yields of the FHG and THG reaches ~10-1 for all thegases. Our results show that high-order Kerr effects do exist, whereas they areinsufficient to balance the Kerr self-focusing without the assistance of plasmageneration.

Comparative investigation of third and fifth harmonic generation in atomic and molecular gases driven by mid-infrared ultrafast laser pulses