Crystal orientation plays a critical role in determining the performance of acousto-optic deflectors (AODs). While RF power, optical alignment, and wavelength selection are important, the internal orientation of the acousto-optic crystal often has the greatest impact on diffraction efficiency, beam quality, and scanning speed. For engineers and researchers seeking high-performance optical systems, understanding crystal orientation is essential. https://www.cq-smart.com/acousto-optic-deflectors-principles-applications-and-resolution