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P: Fachverband Plasmaphysik

P 8: Low Pressure Plasmas II

P 8.4: Talk

Tuesday, March 17, 2026, 17:25–17:40, KH 01.020

Holographic optical tweezers for dusty plasmas — Pascal König, Natascha Blosczyk, and •Dietmar Block — IEAP der CAU, 24098 Kiel, Germany

Dusty plasmas are well suited to study strongly coupled systems, because they allow to study their structure and dynamics at an individual particle level. To manipulate their dynamics, lasers are a very versatile tool. Laser heating as well optical tweezers have been realized in the past. This contribution will show first results of a new approach, which promisses a new level of particle manipulation. We replaced the conventional optics of our tweezers with Fourier optics. A spatial light modulator allows to map arbitrary holograms to a dust cloud. We present such a holographic setup and show that it allows to tweeze particles. Based on examples, the potential of this new manipulation tool is shown and compared to conventional laser tweezers.

Keywords: laser maniputaltion; optical tweezers; holography; strong coupling