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

Acousto-optic modulation in piezoelectric materials offers the efficientmethod to bridge electrical and optical signals. It is widely used to controloptical frequencies and intensities in modern optical systems includingQ-switch lasers, ion traps, and optical tweezers. It is also critical foremerging applications such as quantum photonics and non-reciprocal optics.Acousto-optic devices have recently been demonstrated with promisingperformance on integrated platforms. However, the conversion efficiency ofoptical signals remains low in these integrated devices. This is attributed tothe significant challenge in realizing large mode overlap, long interactionlength, and high power robustness at the same time. Here, we developacousto-optic devices with gallium nitride on sapphire substrate. The uniquecapability to confine both optical and acoustic fields in sub-wavelength scaleswithout suspended structures allows efficient acousto-optic interactions overlong distances under high driving power. This leads to the near-unity opticalconversion efficiency with integrated acousto-optic modulators. With theunidirectional phase matching, we also demonstrate the non-reciprocalpropagation of optical fields with isolation ratio above 10 dB. This workprovides a robust and efficient acousto-optic platform, opening newopportunities for optical signal processing, quantum transduction, andnon-magnetic optical isolation.

Integrated waveguide-based acousto-optic modulation with near-unity conversion efficiency