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 wave-front engineering for nonlinear optical interactions was discussed.Using Huygens-Fresnel principle we developed a general theory and technique fordomain engineering with conventional quasi-phase-matching structures being thespecial cases. By Fourier analysis we put forward the concept of localquasi-phase matching, which suggests that the quasi-phase matching is fulfilledonly locally not globally. Experiments on focal effect of second-harmonic waveagreed well with the theoretical prediction. The proposed scheme combines threeoptical functions: generation, focusing and beam splitting of second-harmonicwave, thus making the device more compact. Further the proposed scheme can beused to perform the integration of multi-functional optical properties innonlinear photonics, as well as expand the use of nonlinear optical devices.

Wave-front engineering by Huygens-Fresnel principle for nonlinear optical interactions in domain engineered structures