Paul Buske (RWTH) has won several prizes for his work on beam shaping, which is central to the METAMORPHA approach. In this video, one can see the measured intensity distribution of a laser beam along the optical axis.
The set-up containing two SLMs is tasked to create both a caterpillar and a butterfly distribution at two different distances simultaneously. The measurement is done with a camera on a linear stage and starts behind both the cascaded SLMs and a focusing lens with the target planes placed around the original focus. The width of the caterpillar is approximately 500 µm. Both distributions can be created successfully, highlighting the 3D beam shaping capabilities of the METAMORPHA set-up.
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