Adaptive piezoelectric axicon mirrors for high power femtosecond laser applications

In this work, we present the first mechanically tunable axicon mirror. The intended applications for such a device are nanomachining with high energy femtosecond lasers, microscopy and optical tweezers. The device consists of a piezodisc with structured electrodes, a reflective layer and a soft PDMS supporting ring that allows a rotational movement of the device around its outer perimeter. The performance of the device is optimized by an automated FEM-Simulation. A rapid prototyping fabrication process is presented as well as the mechanical and optical characterization of the system.