Creation of Debye diffraction-limited multifocal arrays and their application in laser nanofabrication

Similar to a 3D printer, the direct laser writing technique is capable of fabricating arbitrary 3D structures at the micro/nanoscale by using a tightly focused laser beam. However, the processing speed of the direct laser writing is slow due to the high resolution and the limitation of light steering devices. To solve this problem, we have demonstrated a new technique namely dynamic laser printing, which is able to produce a 3D structure at a time by employing an array of focused laser beams. In this way, the processing speed can be increased by several orders of magnitude.