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 generalization of quasi-phase-matching using polarization beating and ofmultimode quasi-phase-matching (MMQPM) for the generation of high-orderharmonics is explored, and a method for achieving polarization beating isproposed. If two (and in principle more) modes of a waveguide are excited,modulation of the intensity, phase, and/or polarization of the guided radiationwill be achieved. By appropriately matching the period of this modulation tothe coherence length, quasi-phase-matching of high-order-harmonic radiationgenerated by the guided wave can occur. We show that it is possible to achieveefficiencies with multimode quasi-phase-matching greater than the ideal squarewave modulation. We present a Fourier treatment of QPM and use this to showthat phase modulation, rather than amplitude modulation, plays the dominantrole in the case of MMQPM. The experimental parameters and optimal conditionsfor this scheme are explored.

Quasi-phase-matching of high-order-harmonic generation using multimode polarization beating