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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Thin-film lithium niobate (TFLN) is an emerging platform for compact,low-power nonlinear-optical devices, and has been used extensively fornear-infrared frequency conversion. Recent work has extended these devices tomid-infrared wavelengths, where broadly tunable sources may be used forchemical sensing. To this end, we demonstrate efficient and broadbanddifference frequency generation between a fixed 1-micron pump and a tunabletelecom source in uniformly-poled TFLN-on-sapphire by harnessing thedispersion-engineering available in tightly-confining waveguides. We show asimultaneous 1-2 order-of-magnitude improvement in conversion efficiency and~5-fold enhancement of operating bandwidth for mid-infrared generation whencompared to conventional lithium niobate waveguides. We also examine theeffects of mid-infrared loss from surface-adsorbed water on the performance ofthese devices.

Ultra-broadband mid-infrared generation in dispersion-engineered thin-film lithium niobate