| Popis: |
Bessel beams are quasi-nondiffracting beams. They find numerous applications in high-aspect ratio laser material processing, optical trapping and nonlinear photonics. It is desirable to reach the highest angles to increase the local intensity and reduce the diameter of the laser-generated nanostructures. Here we report on experimental and numerical results of a new Bessel beam shaper which reaches half-cone angle of 48 degrees, i.e. approximately twice higher than state of the art. Numerical analysis of the setup and impact of component misalignment will be presented. |
