SAW field and acousto-optical interaction in ZnO/AlN/sapphire structure

摘要

In the present work theoretical calculations on surface acoustic wave (SAW) propagation characteristics and acousto-optic diffraction efficiency of ZnO/IDT/AlN/Sapphire is performed. The proposed layered structure with ZnO and AlN is found to be a promising high performance SAW device, as it possess an enhanced electromechanical coupling coefficient with an appreciable SAW phase velocity and is temperature stable. Also, the proposed layered structure found to exhibits very high diffraction efficiency and very high acousto optical figure of merit coupled with nearly temperature stable characteristics indicating a bonding device for acousto optic applications.