Fabrication of 3D Templates Using a Large Depth of Focus Femtosecond Laser

Abstract

We report the use of a large depth of focus Bessel beam in the fabrication of cell structures. Two axicon lenses are investigated in the formation of high aspect ratio line structures. A sol-gel resin, with good mechanical strength, is polymerised in a modified two-photon polymerisation system. Examples of different two-dimensional grids are presented to show that the lateral resolution can be maintained even in the rapid fabrication of high-sided structures.

Adaptive piezoelectric axicon mirrors for high power femtosecond laser applications

“…Due to the diffraction free properties, this central peak can be sustained over long propagation distances without broadening. In combination with ultrashort laser pulses, the resolution of direct writing nano-and micromachining processes can be increased significantly [2]. In this application, the axicon produces a larger depth of focus compared to a Gaussian beam which is crucial for machining with highly focused laser beams.…”