Gozzard, DavidSpollard, JamesRoberts, LyleSibley, PaulMcClelland, DavidShaddock, DanielMitchell, ArnanRubinsztein-Dunlop, Halina2022-01-062022-01-06December 997815106314030277-786Xhttp://hdl.handle.net/1885/258236Optical phased arrays (OPAs) are a solid-state device able to manipulate the distribution of optical power without the use of mechanical beam steering systems and have potential applications in free-space laser communications, target acquisition and tracking, and interferometry. Here we present a scalable OPA and digital control architecture capable of steering a laser beam at MHz frequencies, and having arbitrary control over the beam wavefront.application/pdfen-AU© 2019 SPIEoptical phased arrayfield-programmable gate arrayfats steeringwavefront controlphase sensing201910.1117/12.25398922020-12-06