Phase controlled multiple beam interference
For the fabrication of periodic nanostructures it is straightforward to apply interferometric processing techniques. According to this approach a laser beam is subdivided into partial beams which are then recombined on the sample surface by means of an appropriate optical system. Applying a high enough intensity, the resulting interference pattern leads to a spatially periodic material ablation. The shape of the intensity distribution can be controlled by the intersection angle, the relative intensities, the polarization and also the phase relationship of the partial beams.
We introduced a scheme, the so called phase controlled multiple beam interference, which provides an easy means to change the relative phases of the interfering beams, thus allowing the fabrication of a great variety of complex structures.
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Laser-Laboratorium Göttingen e.V. (LLG)
Head of the Department
Dr. Peter Simon
"Short Pulses / Nanostructures"
Contact person for
Nano Structure Technology:
Dr. Jürgen Ihlemann