High quality factor surface Fabry-Perot cavity of acoustic waves
Abstract
Surface acoustic wave (SAW) resonators are critical components in wireless communications and many sensing applications. They have also recently emerged as a subject of study in quantum acoustics at the single phonon level. Acoustic loss reduction and mode confinement are key performance factors in SAW resonators. Here, we report the design and experimental realization of high quality factor Fabry-Perot SAW resonators formed in between the tapered phononic crystal mirrors patterned on a GaN-on-sapphire material platform. The fabricated SAW resonators are characterized by both an electrical network analyzer and an optical heterodyne vibrometer. We observed standing Rayleigh waves inside the cavity, with an intrinsic quality factor exceeding 1.3 × 104 at ambient conditions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 12, 2018
- Source ID
- 10.1063/1.5013161
Entities
People
- Chang-Ling Zou
- Hong X Tang
- Wei Fu
- Yuntao Xu
- Zhen Shen
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- Division of Materials Research
- Naval Information Warfare Systems Command
- Yale University