Four-dimensional optical manipulation of colloidal particles

Rodrigo, Peter John; Daria, Vincent Ricardo; Glückstad, Jesper
February 2005
Applied Physics Letters;2/14/2005, Vol. 86 Issue 7, p074103
Academic Journal
We transform a TEM00 laser mode into multiple counterpropagating optical traps to achieve four-dimensional simultaneous manipulation of multiple particles. Efficient synthesis and dynamic control of the counterpropagating-beam traps is carried out via the generalized phase contrast method, and a spatial polarization-encoding scheme. Our experiments genuinely demonstrate real-time, interactive particle-position control for forming arbitrary volumetric constellations and complex three-dimensional trajectories of multiple particles. This opens up doors for cross-disciplinary cutting-edge research in various fields.


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