Nanomechanical and Optomechanical Coupling in Silicon Carbide / Hexagonal Boron Nitride Hybrid Resonator Yuncong Liu Authors: Yuncong Liu, Yanan Wang, Philip X.-L. Feng Faculty Mentor: Philip Feng, PhD College: College of Engineering Department: Electrical and Computer Engineering |
|
AbstractCavity optomechanical devices have allowed fundamental discoveries spanning from photonic information processing to quantum systems communication. Owing to the high mechanical quality, along with remarkable optical properties, SiC has emerged as an appealing material platform for optomechanical applications. A natural application of such cavity optomechanics is its integration with 2D materials due to their ultrahigh mechanical flexibility and ultralow weight. Among them, hexagonal boron nitride (h-BN) has been spotlighted as a promising candidate to implement experiments with cavity optomechanical systems. Here, we proposed and successfully demonstrated a SiC/h-BN hybrid device by utilizing the high-frequency and high-quality SiC microdisk cavity and mechanically suspended h-BN structure achieved by dry-transfer techniques. Strong mechanical coupling between the constituents is revealed in both optical interferometry measurements and finite element method (FEM) simulations, even with the thickness of h-BN scaled down to a few atomic layers. Numerical computations assess that the hybrid device will lead to an improvement of vacuum coupling rate by 454 Hz (~47%) at the h-BN thickness of 36 nm, compared to the bare SiC microdisk. Understanding of the nanomechanical properties facilitates design and implementation of SiC/h-BN hybrid systems and opens a new door to coherent transduction between optics and mechanics on this platform.
|
|
Poster
|
|
