Record-high 3D printing rate reached by acousto-optical scanning
(a) The schematic of the AOSS. The laser beam is deflected by inertial-free acousto-optic scanning. The wavefront of deflected laser is aberration-free due to the AODy being driven by a non-linear swept signal. Then the laser is switched by a multi-split spatial optical switch, which contains a DOE to split the laser into multi-beams and a digital mask to switch beams individually with different areas adjacent to each other. The switched beams are tightly focused by a high N.A. objective and selectively exposure the…
